Optical element driving mechanism

ABSTRACT

An optical element driving mechanism is provided and includes a fixed assembly, a first movable assembly and a first driving assembly. The first movable assembly is configured to connect a first optical element, and the first movable assembly is movable relative to the fixed assembly. The first driving assembly is configured to drive the first movable assembly to move relative to the fixed assembly in a first dimension.

CROSS REFERENCE TO RELATED APPLICATIONS

This application is a Continuation of application Ser. No. 17/406,605,filed on Aug. 19, 2021, which claims the benefit of U.S. ProvisionalApplication No. 63/078,641, filed on Sep. 15, 2020, the entirety ofwhich are incorporated by reference herein.

BACKGROUND OF THE DISCLOSURE Field of the Disclosure

The present disclosure relates to an optical element driving mechanism,and in particular it relates to an optical element driving mechanismhaving optical zoom function.

Description of the Related Art

As technology has developed, many of today's electronic devices (such assmartphones) have a camera or video functionality. Using the cameramodules disposed on electronic devices, users can operate theirelectronic devices to capture photographs and record videos.

Today's design of electronic devices continues to follow the trend ofminiaturization, meaning that the various components of the cameramodule or its structure must also be continuously reduced, so as toachieve miniaturization. In general, a driving mechanism in the cameramodule has a camera lens holder configured to hold a camera lens, andthe driving mechanism can have the functions of auto focusing or opticalimage stabilization. However, although the existing driving mechanismcan achieve the aforementioned functions of photographing or videorecording, they still cannot meet all the needs of the users.

Therefore, how to design a camera module capable of being disposed onthe front side or the rear side of an electronic device and capable ofachieving miniaturization are topics nowadays that need to be discussedand solved.

BRIEF SUMMARY OF THE DISCLOSURE

Accordingly, one objective of the present disclosure is to provide anoptical element driving mechanism to solve the problems described above.

According to some embodiments of the disclosure, an optical elementdriving mechanism is provided and includes a fixed assembly, a firstmovable assembly and a first driving assembly. The first movableassembly is configured to connect a first optical element, and the firstmovable assembly is movable relative to the fixed assembly. The firstdriving assembly is configured to drive the first movable assembly tomove relative to the fixed assembly in a first dimension.

According to some embodiments, the first driving assembly includes: afirst coil; a first permeability element, corresponding to the firstcoil; a first magnetic element, corresponding to the first coil andconfigured to generate a first driving force, wherein the first magneticelement has a first surface which faces the first coil; a first magnetic-enhancing element, corresponding to the first magnetic element andconfigured to adjust the magnetic field of the first magnetic element;and a first fixed element, fixedly connected to the first permeabilityelement; the first permeability element has a metal material; the firstcoil is wound around the first permeability element; the firstmagnetic-enhancing element is fixedly connected to the first magneticelement; the first fixed element has a plastic material; when viewed ina first direction parallel to the first surface, at least a part of thefirst coil is located between the first magnetic element and the firstpermeability element; when viewed in the first direction, at least apart of the first fixed element is located between the firstpermeability element and the first coil; when viewed in the firstdirection, at least a part of the first fixed element is located betweenthe first permeability element and the first magnetic element.

According to some embodiments, the optical element driving mechanismfurther includes a second movable assembly configured to be connected toa second optical element, and the second movable assembly is movablerelative to the fixed assembly; the first optical element includes alens; the second optical element includes a lens; the second movableassembly is movable relative to the first movable assembly; the opticalelement driving mechanism further includes a second driving assemblyconfigured to drive the second movable assembly to move relative to thefixed assembly; the second driving assembly is configured to drive thesecond movable assembly to move in a second dimension relative to thefirst movable assembly; the second driving assembly includes: a secondcoil; a second permeability element, corresponding to the second coil; asecond magnetic element, corresponding to the second coil and configuredto generate a second driving force, wherein the second magnetic elementhas a second surface which faces the second coil; a secondmagnetic-enhancing element, corresponding to the second magnetic elementand configured to adjust the magnetic field of the second magneticelement; and a second fixed element, fixedly connected to the secondpermeability element; the second magnetic-enhancing element is fixedlyconnected to the second magnetic element; the second permeabilityelement has a metal material; the second coil is wound around the secondpermeability element; the second fixed element has a plastic material;when viewed in a second direction parallel to the second surface, atleast a part of the second coil is located between the second magneticelement and the second permeability element; when viewed in the seconddirection, at least a part of the second fixed element is locatedbetween the second permeability element and the second coil; when viewedin the second direction, at least a part of the second fixed element islocated between the second permeability element and the second magneticelement.

According to some embodiments, the first movable assembly is movablerelative to the fixed assembly in the first dimension within a firstextreme range; the second movable assembly is movable relative to thefixed assembly in the first dimension within a second extreme range; thefirst extreme range is different from the second extreme range; thefirst extreme range is smaller than the second extreme range; movementin the first dimension is a linear movement in the first direction;movement in the second dimension is a linear movement in the seconddirection; the first direction is parallel to the second direction; in athird direction perpendicular to the first surface, minimum sizes of thefirst permeability element and the second permeability element aredifferent; in the third direction, the minimum size of the firstpermeability element is greater than the minimum size of the secondpermeability element; a shortest distance between the first magneticelement and the first coil is different from a shortest distance betweenthe second magnetic element and the second coil; the shortest distancebetween the first magnetic element and the first coil is shorter thanthe shortest distance between the second magnetic element and the secondcoil; in the third direction, a maximum size of the first magneticelement is different from a maximum size of the second magnetic element;in the third direction, the maximum size of the first magnetic elementis greater than the maximum size of the second magnetic element; in thefirst direction, a maximum size of the first magnetic element isdifferent from a maximum size of the second magnetic element; in thefirst direction, the maximum size of the first magnetic element is lessthan the maximum size of the second magnetic element; when viewed in thefirst direction, a surface of the first permeability elementperpendicular to the third direction overlaps at least a part of thesecond permeability element; the first fixed element and the secondfixed element form a fixed member; the second fixed element and thefirst fixed element have an integrally formed structure; in the firstdirection, a first end portion of the fixed member having a longstrip-shaped structure is not in contact with the fixed assembly; in thefirst direction, a second end portion of the fixed member is not incontact with the fixed assembly, and the first end portion and thesecond end portion are arranged along the first direction; the fixedmember includes: a first fixed surface, located at the first end portionand perpendicular to the first direction; a second fixed surface,located at the first end portion and parallel to the first surface; athird fixed surface, located at the first end portion, wherein the thirdfixed surface and the second fixed surface face in opposite directions;a fourth fixed surface, located at the first end portion andperpendicular to the first fixed surface and the second fixed surface; afifth fixed surface, wherein the fifth fixed surface and the first fixedsurface face in opposite directions; a sixth fixed surface, located atthe second end portion and perpendicular to the first direction; and aseventh fixed surface, wherein the seventh fixed surface and the sixthfixed surface face in opposite directions; the first fixed surface islocated at the first fixed element; the second fixed surface is locatedat the first fixed element; the third fixed surface is located at thefirst permeability element; the fourth fixed surface is located at thefirst fixed element; the fifth fixed surface is located at the firstfixed element; the sixth fixed surface is located at the second fixedelement; the seventh fixed surface is located at the second fixedelement; in the first direction, a shortest distance between the firstfixed surface and the fixed assembly is less than a shortest distancebetween the fifth fixed surface and the fixed assembly; in a directionperpendicular to the second fixed surface, a shortest distance betweenthe second fixed surface and the fixed assembly is greater than ashortest distance between the third fixed surface and the fixedassembly; the shortest distance between the first fixed surface and thefixed assembly is greater than a shortest distance between the fourthfixed surface and the fixed assembly; when viewed in the firstdirection, the fifth fixed surface overlaps at least a part of theseventh fixed surface; in the first direction, a shortest distancebetween the sixth fixed surface and the fixed assembly is shorter than ashortest distance between the seventh fixed surface and the fixedassembly.

According to some embodiments, the fixed assembly further includes apositioning assembly configured to position the fixed member; thepositioning assembly has a protruding structure and extends in adirection perpendicular to the first direction and the third direction;the optical element driving mechanism further includes amagnetic-adjusting element configured to adjust magnetic force betweenthe first magnetic element and the second magnetic element to avoidmutual magnetic interference between the first magnetic element and thesecond magnetic element to affect movement of the first movable assemblyand the second movable assembly; the magnetic-adjusting element isfixedly disposed on the positioning assembly; the magnetic-adjustingelement has a U-shaped structure.

According to some embodiments, the optical element driving mechanismfurther includes a first guiding assembly configured to guide the firstmovable assembly to move in the first direction relative to the fixedassembly; the first guiding assembly includes a guiding rod having along strip-shaped structure extending in the first direction; theguiding rod passes through the first movable assembly; when viewed in afourth direction perpendicular to the first direction and the thirddirection, the guiding rod overlaps at least a part of the first movableassembly; the first guiding assembly is configured to guide the secondmovable assembly to move in the first direction relative to the fixedassembly; the guiding rod passes through the second movable assembly;when viewed in the fourth direction, the guiding rod overlaps at least apart of the second movable assembly; a shortest distance between thefirst driving assembly and the guiding rod is the same as a shortestdistance between the second driving assembly and the guiding rod; ashortest distance between the first coil and the guiding rod is the sameas a shortest distance between the second coil and the guiding rod; ashortest distance between the first magnetic element and the guiding rodis the same as a shortest distance between the second magnetic elementand the guiding rod; a shortest distance between the firstmagnetic-enhancing element and the guiding rod is the same as a shortestdistance between the second magnetic-enhancing element and the guidingrod; a shortest distance between the first permeability element and theguiding rod is different from a shortest distance between the secondpermeability element and the guiding rod; the shortest distance betweenthe first permeability element and the guiding rod is shorter than ashortest distance between the second permeability element and theguiding rod.

According to some embodiments, the optical element driving mechanismfurther includes a sensing assembly electrically connected to the firstdriving assembly, and the sensing assembly includes: a first referenceelement, having a long strip-shaped structure; a first sensing element,corresponding to the first reference element and configured to sensemovement of the first movable assembly relative to the fixed assembly; asecond reference element, having a long strip-shaped structure; a thirdreference element, having a long strip-shaped structure; a fourthreference element, having a long strip-shaped structure; and a secondsensing element, corresponding to the third reference element andconfigured to sense movement of the second movable assembly relative tothe fixed assembly; the extension directions of the first referenceelement and the second reference element are not parallel; a length ofthe first reference element is the same as a length of the secondreference element; when viewed in the first direction, the firstreference element overlaps at least a part of the second referenceelement; when viewed in the first direction, the first reference elementdoes not overlap the first sensing element; when viewed in the fourthdirection, the first reference element overlaps at least a part of theguiding rod; when viewed in the fourth direction, the first sensingelement overlaps at least a part of the guiding rod; when viewed in thefourth direction, the first driving assembly does not overlap theguiding rod; the extension directions of the third reference element andthe fourth reference element are not parallel; a length of the thirdreference element is the same as a length of the fourth referenceelement; the length of the first reference element is different from thelength of the third reference element; the length of the first referenceelement is less than the length of the third reference element; whenviewed in the first direction, the third reference element overlaps atleast a part of the fourth reference element; when viewed in the firstdirection, the third reference element does not overlap the secondsensing element; when viewed in the fourth direction, the thirdreference element overlaps at least a part of the guiding rod; whenviewed in the fourth direction, the second sensing element overlaps atleast a part of the guiding rod; when viewed in the fourth direction,the second driving assembly does not overlap the guiding rod; theoptical element driving mechanism further includes a control elementconfigured to control the first driving assembly to drive the firstmovable assembly to move relative to the fixed assembly; the controlelement is configured to control the second driving assembly to drivethe second movable assembly to move relative to the fixed assembly; thecontrol element is electrically connected to the first sensing element;the control element is electrically connected to the second sensingelement; when viewed in the fourth direction, the control element islocated between the first driving assembly and the second drivingassembly; when viewed in the fourth direction, the control element islocated between the first coil and the second coil; when viewed in thefourth direction, the control element is located between the firstpermeability element and the second permeability element; when viewed inthe fourth direction, the first permeability element overlaps at least apart of the control element; when viewed in the fourth direction, thesecond permeability element overlaps at least a part of the controlelement; when viewed in the fourth direction, the control elementoverlaps at least a part of the positioning assembly; the opticalelement driving mechanism further includes a circuit assemblyelectrically connected to the first sensing element; the circuitassembly has a plate-shaped structure; the first sensing element iselectrically connected to the control element via the circuit assembly;the control element is electrically connected to the first drivingassembly via the circuit assembly.

According to some embodiments, the fixed assembly includes: a bottomplate, having a plate-shaped structure; and a base; the base is fixedlydisposed on the bottom plate; the bottom plate includes a metal; thebase includes a plastic material; at least a part of the first drivingassembly is fixedly disposed on the base; the fixed member is fixedlydisposed on the base; A permeability of the bottom plate is less than apermeability of the first permeability element; the base and thepositioning assembly are integrally formed in one piece; a notch isformed on the base and is configured to accommodate the control element;when viewed in the fourth direction, the base does not overlap the firstsensing element; when viewed in the fourth direction, the base overlapsat least a part of the control element; the circuit assembly is disposedbetween the base and the bottom plate.

According to some embodiments, the fixed assembly further includes: anouter frame, having a top surface and a side surface, having aplate-shaped structure, and the top surface is not parallel to the sidesurface; and a frame, fixedly disposed on the bottom plate; the outerframe has a metal material; the frame has a plastic material; theoptical element driving mechanism further includes a third opticalelement, fixedly connected to the base; the third optical element has alens to diffuse or converge a light beam; the base has a convexstructure, corresponding to the third optical element; the third opticalelement is fixedly connected to the frame; the frame has a convexstructure, corresponding to the third optical element; the light beam isincident on a photosensitive assembly through the first optical element,the second optical element, and the third optical element, and thephotosensitive assembly includes a photosensitive element.

According to some embodiments, the optical element driving mechanism isconfigured to correspond to and be adjacent to an optical system; whenviewed in the fourth direction, the optical element driving mechanismhas a polygonal structure; when viewed in the fourth direction, thelight beam enters from a first side of the optical element drivingmechanism and exits from a second side, and the first side and thesecond side are parallel to each other; when viewed in the fourthdirection, the first driving assembly is located at a third side of theoptical element driving mechanism; when viewed in the fourth direction,the second driving assembly is located at the third side; when viewed inthe fourth direction, the first sensing element is located at the thirdside; when viewed in the fourth direction, the second sensing element islocated at the third side; when viewed in the fourth direction, adistance between an optical axis of the first optical element and aboundary of the third side is greater than a distance between theoptical axis and a boundary of the fourth side of the optical elementdriving mechanism; the third side is parallel to the optical axis; thethird side and the fourth side are parallel to each other; when viewedin the fourth direction, there is no electromagnetic driving assemblydisposed on the fourth side; when viewed in the fourth direction, theoptical system is located at the fourth side.

The present disclosure provides an optical element driving mechanism,including the first driving assembly and the second driving assemblyconfigured to respectively drive the first movable assembly and thesecond movable assembly to move along the first dimension. The firstmovable assembly and the second movable assembly respectively hold thefirst optical element and the second optical element, and the firstmovable assembly and the second movable assembly can be individually orcooperatively driven so as to achieve the function of optical zoom.

In addition, the optical element driving mechanism may include a firstguiding assembly, which may include a guiding rod passing through thefirst movable assembly and the second movable assembly, so that thefirst movable assembly and the second movable assembly can move steadilyin the first direction. In addition, the first driving assembly includesthe first permeability element and the first magnetic element, the firstpermeability element is affixed to the fixed member, and the firstmagnetic element is affixed to the first movable assembly. Based on themagnetic attraction force between the first permeability element and thefirst magnetic element, the stability of the first movable assembly whenmoving along the guiding rod can be further improved.

Additional features and advantages of the disclosure will be set forthin the description which follows, and, in part, will be obvious from thedescription, or can be learned by practice of the principles disclosedherein. The features and advantages of the disclosure can be realizedand obtained by means of the instruments and combinations pointed out inthe appended claims. These and other features of the disclosure willbecome more fully apparent from the following description and appendedclaims, or can be learned by the practice of the principles set forthherein.

BRIEF DESCRIPTION OF THE DRAWINGS

Aspects of the present disclosure are best understood from the followingdetailed description when read with the accompanying figures. It isnoted that, in accordance with the standard practice in the industry,various features are not drawn to scale. In fact, the dimensions of thevarious features may be arbitrarily increased or reduced for clarity ofdiscussion.

FIG. 1 is a schematic diagram of an optical element driving mechanism1-100 according to an embodiment of the present disclosure.

FIG. 2 is an exploded diagram of the optical element driving mechanism1-100 according to an embodiment of the present disclosure.

FIG. 3 is a cross-sectional view of the optical element drivingmechanism 1-100 along line 1-A-1-A in FIG. 1 according to an embodimentof the present disclosure.

FIG. 4 is a cross-sectional view of the optical element drivingmechanism 1-100 along the XZ plane according to an embodiment of thepresent disclosure.

FIG. 5 is a top view of the optical element driving mechanism 100according to an embodiment of the present disclosure.

FIG. 6 is a top view of a partial structure of the optical elementdriving mechanism 100 according to an embodiment of the presentdisclosure.

FIG. 7 is a cross-sectional view of the optical element drivingmechanism 1-100 along the YZ plane according to an embodiment of thepresent disclosure.

FIG. 8 is an enlarged view of the optical element driving mechanism1-100 according to an embodiment of the present disclosure.

FIG. 9 is a cross-sectional view of the optical element drivingmechanism 1-100 along the YZ plane according to an embodiment of thepresent disclosure.

FIG. 10 is a cross-sectional view of the optical element drivingmechanism 1-100 along the XZ plane according to an embodiment of thepresent disclosure.

FIG. 11 is a partial structural diagram of the optical element drivingmechanism 1-100 and an optical system 1-10 according to an embodiment ofthe present disclosure.

FIG. 12 is a schematic diagram of an optical element driving mechanism2-100 according to an embodiment of the present disclosure.

FIG. 13 is an exploded diagram of the optical element driving mechanism2-100 according to an embodiment of the present disclosure.

FIG. 14 is a cross-sectional view of the optical element drivingmechanism 2-100 along line 2-A-2-A in FIG. 12 according to an embodimentof the present disclosure.

FIG. 15 is a cross-sectional view of the optical element drivingmechanism 2-100 along the XZ plane according to an embodiment of thepresent disclosure.

FIG. 16 is a top view of the optical element driving mechanism 2-100according to an embodiment of the present disclosure.

FIG. 17 is a top view of a partial structure of the optical elementdriving mechanism 2-100 according to an embodiment of the presentdisclosure.

FIG. 18 is a cross-sectional view of the optical element drivingmechanism 2-100 along the YZ plane according to an embodiment of thepresent disclosure.

FIG. 19 is an enlarged view of the optical element driving mechanism2-100 according to an embodiment of the present disclosure.

FIG. 20 is a perspective view of a partial structure of the opticalelement driving mechanism 2-100 according to an embodiment of thepresent disclosure.

FIG. 21 is a perspective view of a partial structure of the opticalelement driving mechanism 2-100 according to another embodiment of thepresent disclosure.

FIG. 22 is a cross-sectional view of the optical element drivingmechanism 2-100 along the XZ plane according to another embodiment of tothe present disclosure.

FIG. 23 is a perspective view of a partial structure of the opticalelement driving mechanism 2-100 according to an embodiment of thepresent disclosure.

FIG. 24 is a cross-sectional view of the optical element drivingmechanism 2-100 along the YZ plane according to an embodiment of thepresent disclosure.

FIG. 25 is a schematic diagram of the optical element driving mechanism2-100 in another view according to an embodiment of the presentdisclosure.

DETAILED DESCRIPTION OF THE ILLUSTRATIVE EMBODIMENTS

The following disclosure provides many different embodiments, orexamples, for implementing different features of the provided subjectmatter. Specific examples of components and arrangements are describedbelow to simplify the present disclosure. These are, of course, merelyexamples and are not intended to be limiting. For example, the formationof a first feature over or on a second feature in the description thatfollows may include embodiments in which the first and second featuresare in direct contact, and may also include embodiments in whichadditional features may be disposed between the first and secondfeatures, such that the first and second features may not be in directcontact.

In addition, the present disclosure may repeat reference numerals and/orletters in the various examples. This repetition is for the purpose ofsimplicity and clarity and does not in itself dictate a relationshipbetween the various embodiments and/or configurations discussed.Moreover, the formation of a feature on, connected to, and/or coupled toanother feature in the present disclosure that follows may includeembodiments in which the features are in direct contact, and may alsoinclude embodiments in which additional features may be disposedinterposing the features, such that the features may not be in directcontact. In addition, spatially relative terms, for example, “vertical,”“above,” “over,” “below,”, “bottom,” etc. as well as derivatives thereof(e.g., “downwardly,” “upwardly,” etc.) are used in the presentdisclosure for ease of description of one feature's relationship toanother feature. The spatially relative terms are intended to coverdifferent orientations of the device, including the features.

Unless defined otherwise, all technical and scientific terms used hereinhave the same meaning as commonly understood by one of ordinary skill inthe art to which this disclosure belongs. It should be appreciated thateach term, which is defined in a commonly used dictionary, should beinterpreted as having a meaning conforming to the relative skills andthe background or the context of the present disclosure, and should notbe interpreted in an idealized or overly formal manner unless definedotherwise.

Use of ordinal terms such as “first”, “second”, etc., in the claims tomodify a claim element does not by itself connote any priority,precedence, or order of one claim element over another or the temporalorder in which acts of a method are performed, but are used merely aslabels to distinguish one claim element having a certain name fromanother element having the same name (but for use of the ordinal term)to distinguish the claim elements.

In addition, in some embodiments of the present disclosure, termsconcerning attachments, coupling and the like, such as “connected” and“interconnected”, refer to a relationship wherein structures are securedor attached to one another either directly or indirectly throughintervening structures, as well as both movable or rigid attachments orrelationships, unless expressly described otherwise.

Please refer to FIG. 1 to FIG. 3 . FIG. 1 is a schematic diagram of anoptical element driving mechanism 1-100 according to an embodiment ofthe present disclosure, FIG. 2 is an exploded diagram of the opticalelement driving mechanism 1-100 according to an embodiment of thepresent disclosure, and FIG. 3 is a cross-sectional view of the opticalelement driving mechanism 1-100 along line 1-A-1-A in FIG. 1 accordingto an embodiment of the present disclosure. The optical element drivingmechanism 1-100 can be an optical camera module and can be configured tohold and drive an optical element. The optical element driving mechanism1-100 can be installed in various electronic devices or portableelectronic devices, such as a smartphone, for allowing a user to performthe image capturing function. In this embodiment, the optical elementdriving mechanism 1-100 can be a voice coil motor (VCM) with anauto-focusing (AF) function, but it is not limited thereto. In otherembodiments, the optical element driving mechanism 1-100 can alsoperform the functions of auto-focusing and optical image stabilization(OIS).

In this embodiment, the optical element driving mechanism 1-100 mayinclude a fixed assembly 1-FA, a first movable assembly 1-MA1, a firstdriving assembly 1-DA1, a second movable assembly 1-MA2, and a seconddriving assembly 1-DA2.

The fixed assembly 1-FA includes an outer frame 1-101, a bottom plate1-102, a base 1-104, and a frame 1-105. The outer frame 1-101 has aU-shaped structure and may include a top surface 1-1011 and a sidesurface 1-1012, both of which have a plate-shaped structure, and the topsurface 1-1011 is not parallel to the side surface 1-1012. Specifically,the top surface 1-1011 is perpendicular to the side surface 1-1012. Theouter frame 1-101 has a metal material, but it is not limited to this.

The bottom plate 1-102 has a plate-shaped structure, and the bottomplate 1-102 has a metal material. The base 1-104 is fixedly disposed onthe bottom plate 1-102, and the base 1-104 includes a plastic material.The frame 1-105 is fixedly disposed on the bottom plate 1-102, and theframe 1-105 can also include a plastic material.

The first movable assembly 1-MA1 is configured to connect to a firstoptical element 1-OE1, and the first movable assembly 1-MA1 is movablerelative to the fixed assembly 1-FA. The first driving assembly 1-DA1 isconfigured to drive the first movable assembly 1-MA1 to move relative tothe fixed assembly 1-FA. Specifically, the first driving assembly 1-DA1is configured to drive the first movable assembly 1-MA1 to move relativeto the fixed assembly 1-FA in a first dimension. The movement in thefirst dimension is a linear movement in a first direction 1-D1.

The second movable assembly 1-MA2 is movable relative to the firstmovable assembly 1-MA1. The second movable assembly 1-MA2 is configuredto connect to a second optical element 1-OE2, and the second movableassembly 1-MA2 is movable relative to the fixed assembly 1-FA. Thesecond driving assembly 1-DA2 is configured to drive the second movableassembly 1-MA2 to move relative to the fixed assembly 1-FA.Specifically, the second driving assembly 1-DA2 is configured to drivethe second movable assembly 1-MA2 to move in a second dimension relativeto the first movable assembly 1-MA1 and the fixed assembly 1-FA. Themovement in the second dimension is a linear movement in a seconddirection 1-D2. The second direction 1-D2 may be parallel to the firstdirection 1-D1, but it is not limited thereto.

In this embodiment, the first optical element 1-OE1 is a lens, and thesecond optical element 1-OE2 may also be a lens, but it is not limitedthereto.

The first movable assembly 1-MA1 includes a first loading part 1-108 anda first sliding part 1-109, and the first loading part 1-108 is fixedlyconnected to the first sliding part 1-109 through a first middle part1-110 of the first movable assembly 1-MA1. The first optical element1-OE1 is located between the first loading part 1-108 and the firstsliding part 1-109.

The first loading part 1-108 has a plastic material, the first slidingpart 1-109 has a plastic material, and the first middle part 1-110 has ametal material. The first loading part 1-108 and the first sliding part1-109 are arranged along a third direction 1-D3, and the third direction1-D3 is perpendicular to the first direction 1-D1. The first middle part1-110 has an long strip-shaped structure extending along the thirddirection 1-D3.

Similarly, the second movable assembly 1-MA2 includes a second loadingpart 1-112, a second sliding part 1-113, and a second middle part 1-114.The second loading part 1-112 is fixedly connected to the second slidingpart 1-113 through the second middle part 1-114. The second opticalelement 1-OE2 is located between the second loading part 1-112 and thesecond sliding part 1-113. The second loading part 1-112 and the secondsliding part 1-113 include a plastic material, and the second middlepart 1-114 includes a metal material.

The first driving assembly 1-DA1 includes a first coil 1-CL1, a firstpermeability element 1-CM1, a first magnetic element 1-ME1, a firstmagnetic-enhancing element 1-SM1, and a first fixed element 1-1061. Thefirst permeability element 1-CM1 corresponds to the first coil 1-CL1,and the first magnetic element 1-ME1 corresponds to the first coil 1-CL1and is configured to generate a first driving force to drive the firstmovable assembly 1-MA1. The first magnetic element 1-ME1 has a firstsurface 1-MS1 facing the first coil 1-CL1, as shown in FIG. 3 .

The first magnetic-enhancing element 1-SM1 corresponds to the firstmagnetic element 1-ME1 and is configured to adjust the magnetic field ofthe first magnetic element 1-ME1. The first magnetic-enhancing element1-SM1 and the first magnetic element 1-ME1 are fixedly disposed in thefirst loading part 1-108, and the first magnetic-enhancing element 1-SM1is fixedly connected to the first magnetic element 1-ME1 to adjust themagnetic field of the first magnetic element 1-ME1.

The first permeability element 1-CM1 has a metal material, and the firstcoil 1-CL1 is wound around the first permeability element 1-CM1.Specifically, the first fixed element 1-1061 is fixedly connected to thefirst permeability element 1-CM1, and the first coil 1-CL1 is woundaround the first permeability element 1-CM1 and the first fixed element1-1061. The first fixed element 1-1061 includes a plastic material.

As shown in FIG. 3 , when viewed in the first direction 1-D1 which isparallel to the first surface 1-MS1, at least a part (the left part) ofthe first coil 1-CL1 is located between the first magnetic element 1-ME1and the first permeability element 1-CM1.

When viewed in the first direction 1-D1, at least a part of the firstfixed element 1-1061 is located between the first permeability element1-CM1 and the first coil 1-CL1. When viewed in the first direction 1-D1,at least a part of the first fixed element 1-1061 is located between thefirst permeability element 1-CM1 and the first magnetic element 1-ME1.

Please refer to FIG. 2 and FIG. 4 , and FIG. 4 is a cross-sectional viewof the optical element driving mechanism 1-100 along the XZ planeaccording to an embodiment of the present disclosure. Similarly, thesecond driving assembly 1-DA2 includes a second coil 1-CL2, a secondpermeability element 1-CM2, a second magnetic element 1-ME2, a secondmagnetic-enhancing element 1-SM2, and a second fixed element 1-1062. Thesecond permeability element 1-CM2 corresponds to the second coil 1-CL2,and the second magnetic element 1-ME2 corresponds to the second coil1-CL2 and is configured to generate a second driving force to drive thesecond movable assembly 1-MA2. The second magnetic element 1-ME2 has asecond surface 1-MS2, which faces the second coil 1-CL2.

The second magnetic-enhancing element 1-SM2 corresponds to the secondmagnetic element 1-ME2 and is configured to adjust the magnetic field ofthe second magnetic element 1-ME2. The second magnetic-enhancing element1-SM2 and the second magnetic element 1-ME2 are fixedly disposed in thesecond loading part 1-112, and the second magnetic-enhancing element1-SM2 is fixedly connected to the second magnetic element 1-ME2 toadjust the magnetic field of the second magnetic element 1-ME2.

The second permeability element 1-CM2 has a metal material, and thesecond coil 1-CL2 is wound around the second permeability element 1-CM2.Specifically, the second fixed element 1-1062 is fixedly connected tothe second permeability element 1-CM2, and the second coil 1-CL2 iswound around the second permeability element 1-CM2 and the second fixedelement 1-1062. The second fixed element 1-1062 includes a plasticmaterial.

As shown in FIG. 4 , when viewed in the second direction 1-D2 which isparallel to the second surface 1-MS2, at least a part (the left part) ofthe second coil 1-CL2 is located between the second magnetic element1-ME2 and the second permeability element 1-CM2.

When viewed in the second direction 1-D2, at least a part of the secondfixed element 1-1062 is located between the second permeability element1-CM2 and the second coil 1-CL2. When viewed in the second direction1-D2, at least a part of the second fixed element 1-1062 is locatedbetween the second permeability element 1-CM2 and the second magneticelement 1-ME2.

Please refer to FIG. 5 and FIG. 6 . FIG. 5 is a top view of the opticalelement driving mechanism 100 according to an embodiment of the presentdisclosure, and FIG. 6 is a top view of a partial structure of theoptical element driving mechanism 100 according to an embodiment of thepresent disclosure. In this embodiment, the first movable assembly 1-MA1is movable relative to the fixed assembly 1-FA in the first dimensionwithin a first extreme range 1-ER1, and the second movable assembly1-MA2 is movable relative to the fixed assembly 1-FA in the firstdimension within a second extreme range 1-ER2.

The first extreme range 1-ER1 is different from the second extreme range1-ER2. Specifically, the first extreme range 1-ER1 is smaller than thesecond extreme range 1-ER2.

As shown in FIG. 6 , in the third direction 1-D3 which is perpendicularto the first surface 1-MS1, the minimum size of the first permeabilityelement 1-CM1 is different from the minimum size of the secondpermeability element 1-CM2. In the third direction 1-D3, the minimumsize of the first permeability element 1-CM1 is greater than the minimumsize of the second permeability element 1-CM2.

In this embodiment, the thickness of the first permeability element1-CM1 having a plate-shaped structure is different from the thickness ofthe second permeability element 1-CM2 having the plate-shaped structure.Specifically, the thickness of the first permeability element 1-CM1 isgreater than the thickness of the second permeability element 1-CM2.

Furthermore, the shortest distance between the first magnetic element1-ME1 and the first coil 1-CL1 is different from the shortest distancebetween the second magnetic element 1-ME2 and the second coil 1-CL2.Specifically, the shortest distance between the first magnetic element1-ME1 and the first coil 1-CL1 is shorter than the shortest distancebetween the second magnetic element 1-ME2 and the second coil 1-CL2.

As shown in FIG. 6 , in the third direction 1-D3, the maximum size ofthe first magnetic element 1-ME1 is different from the maximum size ofthe second magnetic element 1-ME2. Specifically, in the third direction1-D3, the maximum size of the first magnetic element 1-ME1 is greaterthan the maximum size of the second magnetic element 1-ME2.

In the first direction 1-D1, the maximum size of the first magneticelement 1-ME1 is different from the maximum size of the second magneticelement 1-ME2. Specifically, in the first direction 1-D1, the maximumsize of the first magnetic element 1-ME1 is less than the maximum sizeof the second magnetic element 1-ME2.

When viewed in the first direction 1-D1, a surface of the firstpermeability element 1-CM1 perpendicular to the third direction 1-D3(such as the upper surface in FIG. 6 ) overlaps at least a part of thesecond permeability element 1-CM2.

Based on the above structural configuration, the electromagnetic drivingforce and the attractive force between the magnetic element and thecorresponding permeability element can be effectively adjusted, so thatthe first movable assembly 1-MA1 and the second movable assembly 1-MA2within different moving ranges can maintain a good balance.

In this embodiment, the first fixed element 1-1061 and the second fixedelement 1-1062 can form a fixed member 1-106. The second fixed element1-1062 and the first fixed element 1-1061 have an integral structure.That is, they are not connected to each other by connecting means suchas glue or welding.

In the first direction 1-D1, a first end portion 1-1063 of the fixedmember 1-106 having an long strip-shaped structure is not in contactwith the fixed assembly 1-FA. In the first direction 1-D1, a second endportion 1-1064 of the fixed member 1-106 is not in contact with thefixed assembly 1-FA, and the first end portion 1-1063 and the second endportion 1-1064 are arranged along the first direction 1-D1.

Please refer to FIG. 5 and FIG. 7 . FIG. 7 is a cross-sectional view ofthe optical element driving mechanism 1-100 along the YZ plane accordingto an embodiment of the present disclosure. As shown in FIG. 5 and FIG.7 , the fixed member 1-106 further includes a first fixed surface1-1071, a second fixed surface 1-1072, a third fixed surface 1-1073, anda fourth fixed surface 1-1074, a fifth fixed surface 1-1075, a sixthfixed surface 1-1076, and a seventh fixed surface 1-1077.

The first fixed surface 1-1071 is located at the first end portion1-1063 and is perpendicular to the first direction 1-D1. The secondfixed surface 1-1072 is located at the first end portion 1-1063 and isparallel to the first surface 1-MS1. The third fixed surface 1-1073 islocated at the first end portion 1-1063, and the second fixed surface1-1072 and the third fixed surface 1-1073 face in opposite directions.The fourth fixed surface 1-1074 is located at the first end portion1-1063 and is perpendicular to the first fixed surface 1-1071 and thesecond fixed surface 1-1072. The fifth fixed surface 1-1075 and thefirst fixed surface 1-1071 face in opposite directions.

The first fixed surface 1-1071 is located at the first fixed element1-1061, the second fixed surface 1-1072 is located at the first fixedelement 1-1061, the third fixed surface 1-1073 is located at the firstpermeability element 1-CM1, the fourth fixed surface 1-1074 is locatedat the first fixed element 1-1061, and the fifth fixed surface 1-1075 islocated at the first fixed element 1-1061.

The sixth fixed surface 1-1076 is located at the second end portion1-1064 and is perpendicular to the first direction 1-D1. The seventhfixed surface 1-1077 and the sixth fixed surface 1-1076 face theopposite directions. The sixth fixed surface 1-1076 is located at thesecond fixed element 1-1062, and the seventh fixed surface 1-1077 islocated at the second fixed element 1-1062.

As shown in FIG. 5 , in the first direction 1-D1, the shortest distancebetween the first fixed surface 1-1071 and the fixed assembly 1-FA isshorter than the shortest distance between the fifth fixed surface1-1075 and the fixed assembly 1-FA. Specifically, the shortest distancebetween the first fixed surface 1-1071 and the base 1-104 in the firstdirection 1-D1 is not zero. That is, the first fixed surface 1-1071 doesnot contact the base 1-104.

In a direction perpendicular to the second fixed surface 1-1072, such asin the third direction 1-D3, the shortest distance between the secondfixed surface 1-1072 and the fixed assembly 1-FA is greater than theshortest distance between third fixed surface 1-1073 and the fixedassembly 1-FA. For example, the third fixed surface 1-1073 contacts thebase 1-104, but the second fixed surface 1-1072 does not contact thebase 1-104.

Furthermore, the shortest distance between the first fixed surface1-1071 and the fixed assembly 1-FA is greater than the shortest distancebetween the fourth fixed surface 1-1074 and the fixed assembly 1-FA.Specifically, the fourth fixed surface 1-1074 contacts the base 1-104,but the first fixed surface 1-1071 does not contact the base 1-104.

When viewed in the first direction 1-D1, the fifth fixed surface 1-1075overlaps at least a part of the seventh fixed surface 1-1077. In thefirst direction 1-D1, the shortest distance between the sixth fixedsurface 1-1076 and the fixed assembly 1-FA is shorter than the shortestdistance between the seventh fixed surface 1-1077 and the fixed assembly1-FA.

Based on the above structural design, the fixed member 1-106 can beaccurately positioned on the base 1-104, and the overall structuralstrength can be increased.

Please refer to FIG. 2 , FIG. 5 , and FIG. 8 . FIG. 8 is an enlargedview of the optical element driving mechanism 1-100 according to anembodiment of the present disclosure. In this embodiment, the base 1-104of the fixed assembly 1-FA further includes a positioning assembly 1-PA,which is configured to position the fixed member 1-106. The positioningassembly 1-PA has a protruding structure and extends along a direction(the Z-axis) perpendicular to the first direction 1-D1 and the thirddirection 1-D3.

Furthermore, the optical element driving mechanism 1-100 includes amagnetic-adjusting element 1-AE, located between the first loading part1-108 and the second loading part 1-112, and is configured to adjust themagnetic force between the first magnetic element 1-ME1 and the secondmagnetic element 1-ME2 so as to avoid mutual magnetic interferencebetween the first magnetic element 1-ME2 and the second magnetic element1-ME2 to affect the movement of the first movable assembly 1-MA1 and thesecond movable assembly 1-MA2.

The magnetic-adjusting element 1-AE is fixedly disposed on thepositioning assembly 1-PA, and the magnetic-adjusting element 1-AE mayhave a U-shaped structure. The magnetic-adjusting element 1-AE may havea metal material, for example, but it is not limited thereto.

Please continue to refer to FIG. 2 to FIG. 8 . The optical elementdriving mechanism 1-100 further includes a first guiding assembly 1-GA1configured to guide the first movable assembly 1-MA1 to move in thefirst direction 1-D1 relative to the fixed assembly 1-FA. The firstguiding assembly 1-GA1 includes a guiding rod 1-120 having an longstrip-shaped structure extending in the first direction 1-D1. Theguiding rod 1-120 passes through the first loading part 1-108 of thefirst movable assembly 1-MA1. When viewed in a fourth direction 1-D4(the Z-axis) which is perpendicular to the first direction 1-D1 and thethird direction 1-D3, the guiding rod 1-120 overlaps at least a part ofthe first movable assembly 1-MA1.

Similarly, the guiding rod 1-120 of the first guiding assembly 1-GA1 isconfigured to guide the second movable assembly 1-MA2 to move in thefirst direction 1-D1 relative to the fixed assembly 1-FA. The guidingrod 1-120 passes through the second loading part 1-112 of the secondmovable assembly 1-MA2. When viewed in the fourth direction 1-D4, theguiding rod 1-120 overlaps at least a part of the second movableassembly 1-MA2.

In this embodiment, the shortest distance between the first drivingassembly 1-DA1 and the guiding rod 1-120 is the same as the shortestdistance between the second driving assembly 1-DA2 and the guiding rod1-120. For example, as shown in FIG. 5 , the shortest distance betweenthe first coil 1-CL1 and the guiding rod 1-120 is the same as theshortest distance between the second coil 1-CL2 and the guiding rod1-120 (in the third direction 1-D3).

In addition, as shown in FIG. 6 , the shortest distance between thefirst magnetic element 1-ME1 and the guiding rod 1-120 is the same asthe shortest distance between the second magnetic element 1-ME2 and theguiding rod 1-120 (in the third direction 1-D3). Similarly, the shortestdistance between the first magnetic-enhancing element 1-SM1 and theguiding rod 1-120 is the same as the shortest distance between thesecond magnetic-enhancing element 1-SM2 and the guiding rod 1-120 (inthe third direction 1-D3).

As shown in FIG. 6 , the shortest distance between the firstpermeability element 1-CM1 and the guiding rod 1-120 is different fromthe shortest distance between the second permeability element 1-CM2 andthe guiding rod 1-120. Specifically, the shortest distance between thefirst permeability element 1-CM1 and the guiding rod 1-120 is shorterthan the shortest distance between the second permeability element 1-CM2and the guiding rod 1-120 (in the third direction 1-D3).

Based on the above structural configuration, the purpose ofminiaturization can be achieved, and the overall balance can also beachieved.

Please refer to FIG. 9 , which is a cross-sectional view of the opticalelement driving mechanism 1-100 along the YZ plane according to anembodiment of the present disclosure. The optical element drivingmechanism 1-100 may further include a sensing assembly 1-SA, which iselectrically connected to the first driving assembly 1-DA1 and thesecond driving assembly 1-DA2. The sensing assembly 1-SA may include afirst reference element 1-RE1, a second reference element 1-RE2, a thirdreference element 1-RE3, a fourth reference element 1-RE4, a firstsensing element 1-SE1, and a second sensing element 1-SE2.

The first reference element 1-RE1, the second reference element 1-RE2,the third reference element 1-RE3, and the fourth reference element1-RE4 may be Hall magnets, and the first sensing element 1-SE1 and thesecond sensing element 1-SE2 may be Hall sensors, but it is not limitedto this embodiment.

The first reference element 1-RE1 has an long strip-shaped structure,the second reference element 1-RE2 has an long strip-shaped structure,the third reference element 1-RE3 has an long strip-shaped structure,and the fourth reference element 1-RE4 has a long strip-shapedstructure. The first sensing element 1-SE1 corresponds to the firstreference element 1-RE1 and the second reference element 1-RE2 and isconfigured to sense the movement of the first movable assembly 1-MA1relative to the fixed assembly 1-FA.

The second sensing element 1-SE2 corresponds to the third referenceelement 1-RE3 and the fourth reference element 1-RE4 and is configuredto sense the movement of the second movable assembly 1-MA2 relative tothe fixed assembly 1-FA.

As shown in FIG. 9 , the extension directions of the first referenceelement 1-RE1 and the second reference element 1-RE2 are not parallel,and the length of the first reference element 1-RE1 is the same as thelength of the second reference element 1-RE2. When viewed in the firstdirection 1-D1, the first reference element 1-RE1 overlaps at least apart of the second reference element 1-RE2, and when viewed in the firstdirection 1-D1, the first reference element 1-RE1 does not overlap thefirst sensing element 1-SE1.

In addition, when viewed in the fourth direction 1-D4, the firstreference element 1-RE1 overlaps at least a part of the guiding rod1-120. When viewed in the fourth direction 1-D4, the first sensingelement 1-SE1 overlaps at least a part of the guiding rod 1-120.Furthermore, when viewed in the fourth direction 1-D4, the first drivingassembly 1-DA1 does not overlap the guiding rod 1-120 (FIG. 5 ).

Similarly, the extension directions of the third reference element 1-RE3and the fourth reference element 1-RE4 are not parallel, and the lengthof the third reference element 1-RE3 is the same as the length of thefourth reference element 1-RE4. It should be noted that the length ofthe first reference element 1-RE1 is different from the length of thethird reference element 1-RE3. Specifically, the length of the firstreference element 1-RE1 is smaller than the length of the thirdreference element 1-RE3.

When viewed in the first direction 1-D1, the third reference element1-RE3 overlaps at least a part of the fourth reference element 1-RE4.When viewed in the first direction 1-D1, the third reference element1-RE3 does not overlap the second sensing element 1-SE2.

In addition, when viewed in the fourth direction 1-D4, the thirdreference element 1-RE3 overlaps at least a part of the guiding rod1-120. When viewed in the fourth direction 1-D4, the second sensingelement 1-SE2 overlaps at least a part of the guiding rod 1-120.Furthermore, when viewed in the fourth direction 1-D4, the seconddriving assembly 1-DA2 does not overlap the guiding rod 1-120 (FIG. 5 ).

As shown in FIG. 2 , FIG. 6 , FIG. 7 , and FIG. 9 , the optical elementdriving mechanism 1-100 further includes a circuit assembly 1-160 and acontrol element 1-162. The circuit assembly 1-160 is, for example, aflexible circuit board, and the control element 1-162 is, for example, acontrol integrated circuit (IC), which is disposed on the circuitassembly 1-160. The circuit assembly 1-160 can be electrically connectedto the first sensing element 1-SE1 and the second sensing element 1-SE2.For example, the first sensing element 1-SE1 and the second sensingelement 1-SE2 are disposed on the circuit assembly 1-160.

The circuit assembly 1-160 has a plate-shaped structure, the firstsensing element 1-SE1 is electrically connected to the control element1-162 via the circuit assembly 1-160, and the control element 1-162 iselectrically connected to the first driving assembly 1-DA1 via thecircuit assembly 1-160.

The control element 1-162 is configured to control the first drivingassembly 1-DA1 to drive the first movable assembly 1-MA1 to moverelative to the fixed assembly 1-FA, and the control element 1-162 isconfigured to control the second driving assembly 1-DA2 to drive thesecond movable assembly 1-MA2 to move relative to the fixed assembly1-FA. The control element 1-162 is electrically connected to the firstsensing element 1-SE1, and the control element 1-162 is electricallyconnected to the second sensing element 1-SE2.

As shown in FIG. 5 , when viewed in the fourth direction 1-D4, thecontrol element 1-162 is located between the first driving assembly1-DA1 and the second driving assembly 1-DA2. Specifically, when viewedin the fourth direction 1-D4, the control element 1-162 is locatedbetween the first coil 1-CL1 and the second coil 1-CL2.

As shown in FIG. 6 , when viewed in the fourth direction 1-D4, thecontrol element 1-162 is located between the first permeability element1-CM1 and the second permeability element 1-CM2. When viewed in thefourth direction 1-D4, the first permeability element 1-CM1 overlaps atleast a part of the control element 1-162. When viewed in the fourthdirection 1-D4, the second permeability element 1-CM2 overlaps at leasta part of the control element 1-162. When viewed in the fourth direction1-D4, the control element 1-162 overlaps at least a part of thepositioning assembly 1-PA.

Please refer to FIG. 2 , FIG. 7 , FIG. 9 to FIG. 10 , and FIG. 10 is across-sectional view of the optical element driving mechanism 1-100along the XZ plane according to an embodiment of the present disclosure.At least a part of the first driving assembly 1-DA1 is fixedly disposedon the base 1-104. For example, the fixed member 1-106 is fixedlydisposed on the base 1-104.

It is worth noting that the permeability of the bottom plate 1-102 isless than the permeability of the first permeability element 1-CM1 orthe second permeability element 1-CM2 so as to avoid the problem ofmagnetic field interference. In addition, the base 1-104 and thepositioning assembly 1-PA are integrally formed in one piece so as toincrease the overall structural strength.

As shown in FIG. 10 , a notch 1-104C is formed on the base 1-104 and isconfigured to accommodate the control element 1-162. When viewed in thefourth direction 1-D4, the base 1-104 does not overlap the first sensingelement 1-SE1. Specifically, the first sensing element 1-SE1 is notocculted by the base 1-104. Furthermore, when viewed in the fourthdirection 1-D4, the base 1-104 overlaps at least a part of the controlelement 1-162, and the circuit assembly 1-160 is disposed between thebase 1-104 and the bottom plate 1-102.

Based on the above design, the magnetic field reversal problem can beavoided, the circuit assembly 1-160 can be prevented from being damaged,the accuracy of the sensing assembly 1-SA can be improved, the overallmechanical strength can be improved, and the effect of miniaturizationcan be achieved.

Please return to FIG. 5 . In this embodiment, the optical elementdriving mechanism 1-100 may further include a third optical element1-OE3, which is fixedly connected to the base 1-104. The third opticalelement 1-OE3 can be a lens configured to diffuse or converge a lightbeam 1-L. The base 1-104 has a concave structure 1-1041, correspondingto the third optical element 1-OE3.

Similarly, the third optical element 1-OE3 is fixedly connected to frame1-105. Specifically, the frame 1-105 has a concave structure 1-1051,corresponding to the third optical element 1-OE3.

The light beam 1-L passes through the third optical element 1-OE3, thefirst optical element 1-OE1, and the second optical element 1-OE2 insequence to be incident on a photosensitive assembly 1-190. Thephotosensitive assembly 1-190 may include a photosensitive element (notshown in the figures) configured to receive the light beam 1-L togenerate a digital image signal. In this embodiment, the photosensitiveassembly 1-190 can be affixed to the base 1-104, for example.

Please refer to FIG. 1 and FIG. 11 . FIG. 11 is a partial structuraldiagram of the optical element driving mechanism 1-100 and an opticalsystem 1-10 according to an embodiment of the present disclosure. Asshown in FIG. 11 , the optical element driving mechanism 1-100 isconfigured to correspond to and is adjacent to the optical system 1-10,and the optical system 1-10 is, for example, a camera module.

When viewed in the fourth direction 1-D4 (the Z-axis), the opticalelement driving mechanism 1-100 has a polygonal structure, such as arectangular structure. When viewed in the fourth direction 1-D4, thelight beam 1-L enters from a first side 1-100S1 of the optical elementdriving mechanism 1-100 and exits from a second side 1-100S2, and thefirst side 1-100S1 and the second side 1-100S2 are parallel to eachother.

When viewed in the fourth direction 1-D4, the first driving assembly1-DA1 is located at a third side 1-100S3 of the optical element drivingmechanism 1-100, and when viewed in the fourth direction 1-D4, thesecond driving assembly 1-DA2 is located at the third side 1-100S3.

When viewed in the fourth direction 1-D4, the first sensing element1-SE1 is located at the third side 1-100S3, and when viewed in thefourth direction 1-D4, the second sensing element 1-SE2 is located atthe third side 1-100S3.

When viewed in the fourth direction 1-D4, the distance between anoptical axis 1-O of the first optical element 1-OE1 and the boundary ofthe third side 1-100S3 is greater than the distance between the opticalaxis 1-O and the boundary of a fourth sidel-100S4 of the optical elementdriving mechanism 1-100. The third side 1-100S3 is parallel to theoptical axis 1-O, and the third side 1-100S3 and the fourth side 1-100S4are parallel to each other.

It should be noted that when viewed in the fourth direction 1-D4, thereis no electromagnetic driving assembly disposed on the fourth side1-100S4, and when viewed in the fourth direction 1-D4, the opticalsystem 1-10 is located at the fourth side 1-100S4.

In this embodiment, the optical element driving mechanism 1-100 and theoptical system 1-10 can be installed in an electronic device (not shownin the figures), such as a smartphone. Therefore, based on the abovedesign, the optical system 1-10 is arranged at the fourth side 1-100S4without any driving components or sensing elements, which caneffectively utilize the space in the electronic device and achieve thepurpose of overall miniaturization.

In summary, the present disclosure provides an optical element drivingmechanism 1-100, including the first driving assembly 1-DA1 and thesecond driving assembly 1-DA2 configured to respectively drive the firstmovable assembly 1-MA1 and the second movable assembly 1-MA2 to movealong the first dimension. The first movable assembly 1-MA1 and thesecond movable assembly 1-MA2 respectively hold the first opticalelement 1-OE1 and the second optical element 1-OE2, and the firstmovable assembly 1-MA1 and the second movable assembly 1-MA2 can beindividually or cooperatively driven so as to achieve the function ofoptical zoom.

In addition, the optical element driving mechanism 1-100 may include afirst guiding assembly 1-GA1, which may include a guiding rod 1-120passing through the first movable assembly 1-MA1 and the second movableassembly 1-MA2, so that the first movable assembly 1-MA1 and the secondmovable assembly 1-MA2 can move steadily in the first direction 1-D1. Inaddition, the first driving assembly 1-DA1 includes the firstpermeability element 1-CM1 and the first magnetic element 1-ME1, thefirst permeability element 1-CM1 is affixed to the fixed member 1-106,and the first magnetic element 1-ME1 is affixed to the first movableassembly 1-MA1. Based on the magnetic attraction force between the firstpermeability element 1-CM1 and the first magnetic element 1-ME1, thestability of the first movable assembly 1-MA1 when moving along theguiding rod 1-120 can be further improved.

Please refer to FIG. 12 to FIG. 14 . FIG. 12 is a schematic diagram ofan optical element driving mechanism 2-100 according to an embodiment ofthe present disclosure, FIG. 13 is an exploded diagram of the opticalelement driving mechanism 2-100 according to an embodiment of thepresent disclosure, and FIG. 14 is a cross-sectional view of the opticalelement driving mechanism 2-100 along line 2-A-2-A in FIG. 12 accordingto an embodiment of the present disclosure. The optical element drivingmechanism 2-100 can be an optical camera module and can be configured tohold and drive an optical element. The optical element driving mechanism2-100 can be installed in various electronic devices or portableelectronic devices, such as a smartphone, for allowing a user to performthe image capturing function. In this embodiment, the optical elementdriving mechanism 2-100 can be a voice coil motor (VCM) with anauto-focusing (AF) function, but it is not limited thereto. In otherembodiments, the optical element driving mechanism 2-100 can alsoperform the functions of auto-focusing and optical image stabilization(OIS).

In this embodiment, the optical element driving mechanism 2-100 mayinclude a fixed assembly 2-FA, a first movable assembly 2-MA1, a firstdriving assembly 2-DA1, a second movable assembly 2-MA2, and a seconddriving assembly 2-DA2.

The fixed assembly 2-FA includes an outer frame 2-101, a bottom plate2-102, a base 2-104, and a frame 2-105. The outer frame 2-101 has aU-shaped structure and may include a top surface 2-1011 and a sidesurface 2-1012, both of which have a plate-shaped structure, and the topsurface 2-1011 is not parallel to the side surface 2-1012. Specifically,the top surface 2-1011 is perpendicular to the side surface 2-1012. Theouter frame 2-101 has a metal material, but it is not limited to this.

The bottom plate 2-102 has a plate-shaped structure, and the bottomplate 2-102 has a metal material. The base 2-104 is fixedly disposed onthe bottom plate 2-102, and the base 2-104 includes a plastic material.The frame 2-105 is fixedly disposed on the bottom plate 2-102, and theframe 2-105 can also include a plastic material.

The first movable assembly 2-MA1 is configured to connect to a firstoptical element 2-OE1, and the first movable assembly 2-MA1 is movablerelative to the fixed assembly 2-FA. The first driving assembly 2-DA1 isconfigured to drive the first movable assembly 2-MA1 to move relative tothe fixed assembly 2-FA. Specifically, the first driving assembly 2-DA1is configured to drive the first movable assembly 2-MA1 to move relativeto the fixed assembly 2-FA in a first dimension. The movement in thefirst dimension is a linear movement in a first direction 2-D1.

The second movable assembly 2-MA2 is movable relative to the firstmovable assembly 2-MA1. The second movable assembly 2-MA2 is configuredto connect to a second optical element 2-OE2, and the second movableassembly 2-MA2 is movable relative to the fixed assembly 2-FA. Thesecond driving assembly 2-DA2 is configured to drive the second movableassembly 2-MA2 to move relative to the fixed assembly 2-FA.Specifically, the second driving assembly 2-DA2 is configured to drivethe second movable assembly 2-MA2 to move in a second dimension relativeto the first movable assembly 2-MA1 and the fixed assembly 2-FA. Themovement in the second dimension is a linear movement in a seconddirection 2-D2. The second direction 2-D2 may be parallel to the firstdirection 2-D1, but it is not limited thereto. That is, the firstdimension is different from the second dimension.

In this embodiment, the first optical element 2-OE1 is a lens, and thesecond optical element 2-OE2 may also be a lens, but it is not limitedthereto.

The first movable assembly 2-MA1 includes a first loading part 2-108 anda first sliding part 2-109, and the first loading part 2-108 is fixedlyconnected to the first sliding part 2-109 through a first middle part2-110 of the first movable assembly 2-MA1. The first optical element2-OE1 is located between the first loading part 2-108 and the firstsliding part 2-109.

The first loading part 2-108 has a plastic material, the first slidingpart 2-109 has a plastic material, and the first middle part 2-110 has ametal material. The first loading part 2-108 and the first sliding part2-109 are arranged along a third direction 2-D3, and the third direction2-D3 is perpendicular to the first direction 2-D1. The first middle part2-110 has an long strip-shaped structure extending along the thirddirection 2-D3.

Similarly, the second movable assembly 2-MA2 includes a second loadingpart 2-112, a second sliding part 2-113, and a second middle part 2-114.The second loading part 2-112 is fixedly connected to the second slidingpart 2-113 through the second middle part 2-114. The second opticalelement 2-OE2 is located between the second loading part 2-112 and thesecond sliding part 2-113. The second loading part 2-112 and the secondsliding part 2-113 include a plastic material, and the second middlepart 2-114 includes a metal material.

The first driving assembly 2-DA1 includes a first coil 2-CL1, a firstpermeability element 2-CM1, a first magnetic element 2-ME1, a firstmagnetic-enhancing element 2-SM1, and a first fixed element 2-1061. Thefirst permeability element 2-CM1 corresponds to the first coil 2-CL1,and the first magnetic element 2-ME1 corresponds to the first coil 2-CL1and is configured to generate a first driving force to drive the firstmovable assembly 2-MA1. The first magnetic element 2-ME1 has a firstsurface 2-MS1 facing the first coil 2-CL1, as shown in FIG. 14 .

The first magnetic-enhancing element 2-SM1 corresponds to the firstmagnetic element 2-ME1 and is configured to adjust the magnetic field ofthe first magnetic element 2-ME1. The first magnetic-enhancing element2-SM1 and the first magnetic element 2-ME1 are fixedly disposed in thefirst loading part 2-108, and the first magnetic-enhancing element 2-SM1is fixedly connected to the first magnetic element 2-ME1 to adjust themagnetic field of the first magnetic element 2-ME1.

The first permeability element 2-CM1 has a metal material, and the firstcoil 2-CL1 is wound around the first permeability element 2-CM1.Specifically, the first fixed element 2-1061 is fixedly connected to thefirst permeability element 2-CM1, and the first coil 2-CL1 is woundaround the first permeability element 2-CM1 and the first fixed element2-1061. The first fixed element 2-1061 includes a plastic material.

As shown in FIG. 14 , when viewed in the first direction 2-D1 which isparallel to the first surface 2-MS1, at least a part (the left part) ofthe first coil 2-CL1 is located between the first magnetic element 2-ME1and the first permeability element 2-CM1.

When viewed in the first direction 2-D1, at least a part of the firstfixed element 2-1061 is located between the first permeability element2-CM1 and the first coil 2-CL1. When viewed in the first direction 2-D1,at least a part of the first fixed element 2-1061 is located between thefirst permeability element 2-CM1 and the first magnetic element 2-ME1.

Please refer to FIG. 13 and FIG. 15 , and FIG. 15 is a cross-sectionalview of the optical element driving mechanism 2-100 along the XZ planeaccording to an embodiment of the present disclosure. Similarly, thesecond driving assembly 2-DA2 includes a second coil 2-CL2, a secondpermeability element 2-CM2, a second magnetic element 2-ME2, a secondmagnetic-enhancing element 2-SM2, and a second fixed element 2-1062. Thesecond permeability element 2-CM2 corresponds to the second coil 2-CL2,and the second magnetic element 2-ME2 corresponds to the second coil2-CL2 and is configured to generate a second driving force to drive thesecond movable assembly 2-MA2. The second magnetic element 2-ME2 has asecond surface 2-MS2, which faces the second coil 2-CL2.

The second magnetic-enhancing element 2-SM2 corresponds to the secondmagnetic element 2-ME2 and is configured to adjust the magnetic field ofthe second magnetic element 2-ME2. The second magnetic-enhancing element2-SM2 and the second magnetic element 2-ME2 are fixedly disposed in thesecond loading part 2-112, and the second magnetic-enhancing element2-SM2 is fixedly connected to the second magnetic element 2-ME2 toadjust the magnetic field of the second magnetic element 2-ME2.

The second permeability element 2-CM2 has a metal material, and thesecond coil 2-CL2 is wound around the second permeability element 2-CM2.Specifically, the second fixed element 2-1062 is fixedly connected tothe second permeability element 2-CM2, and the second coil 2-CL2 iswound around the second permeability element 2-CM2 and the second fixedelement 2-1062. The second fixed element 2-1062 includes a plasticmaterial.

As shown in FIG. 15 , when viewed in the second direction 2-D2 which isparallel to the second surface 2-MS2, at least a part (the left part) ofthe second coil 2-CL2 is located between the second magnetic element2-ME2 and the second permeability element 2-CM2.

When viewed in the second direction 2-D2, at least a part of the secondfixed element 2-1062 is located between the second permeability element2-CM2 and the second coil 2-CL2. When viewed in the second direction2-D2, at least a part of the second fixed element 2-1062 is locatedbetween the second permeability element 2-CM2 and the second magneticelement 2-ME2.

Please refer to FIG. 16 and FIG. 17 . FIG. 16 is a top view of theoptical element driving mechanism 2-100 according to an embodiment ofthe present disclosure, and FIG. 17 is a top view of a partial structureof the optical element driving mechanism 2-100 according to anembodiment of the present disclosure. In this embodiment, the firstmovable assembly 2-MA1 is movable relative to the fixed assembly 2-FA inthe first dimension within a first extreme range 2-ER1, and the secondmovable assembly 2-MA2 is movable relative to the fixed assembly 2-FA inthe first dimension within a second extreme range 2-ER2.

The first extreme range 2-ER1 is different from the second extreme range2-ER2. Specifically, the first extreme range 2-ER1 is smaller than thesecond extreme range 2-ER2.

As shown in FIG. 17 , in the third direction 2-D3 which is perpendicularto the first surface 2-MS1, the minimum size of the first permeabilityelement 2-CM1 is different from the minimum size of the secondpermeability element 2-CM2. In the third direction 2-D3, the minimumsize of the first permeability element 2-CM1 is greater than the minimumsize of the second permeability element 2-CM2.

In this embodiment, the thickness of the first permeability element2-CM1 having a plate-shaped structure is different from the thickness ofthe second permeability element 2-CM2 having the plate-shaped structure.Specifically, the thickness of the first permeability element 2-CM1 isgreater than the thickness of the second permeability element 2-CM2.

Furthermore, the shortest distance between the first magnetic element2-ME1 and the first coil 2-CL1 is different from the shortest distancebetween the second magnetic element 2-ME2 and the second coil 2-CL2.Specifically, the shortest distance between the first magnetic element2-ME1 and the first coil 2-CL1 is shorter than the shortest distancebetween the second magnetic element 2-ME2 and the second coil 2-CL2.

As shown in FIG. 17 , in the third direction 2-D3, the maximum size ofthe first magnetic element 2-ME1 is different from the maximum size ofthe second magnetic element 2-ME2. Specifically, in the third direction2-D3, the maximum size of the first magnetic element 2-ME1 is greaterthan the maximum size of the second magnetic element 2-ME2.

In the first direction 2-D1, the maximum size of the first magneticelement 2-ME1 is different from the maximum size of the second magneticelement 2-ME2. Specifically, in the first direction 2-D1, the maximumsize of the first magnetic element 2-ME1 is less than the maximum sizeof the second magnetic element 2-ME2.

When viewed in the first direction 2-D1, a surface of the firstpermeability element 2-CM1 perpendicular to the third direction 2-D3(such as the upper surface in FIG. 17 ) overlaps at least a part of thesecond permeability element 2-CM2.

Based on the above structural configuration, the electromagnetic drivingforce and the attractive force between the magnetic element and thecorresponding permeability element can be effectively adjusted, so thatthe first movable assembly 2-MA1 and the second movable assembly 2-MA2within different moving ranges can maintain a good balance.

In this embodiment, the first fixed element 2-1061 and the second fixedelement 2-1062 can form a fixed member 2-106. The second fixed element2-1062 and the first fixed element 2-1061 have an integral structure.That is, they are not connected to each other by connecting means suchas glue or welding.

In the first direction 2-D1, a first end portion 2-1063 of the fixedmember 2-106 having an long strip-shaped structure is not in contactwith the fixed assembly 2-FA. In the first direction 2-D1, a second endportion 2-1064 of the fixed member 2-106 is not in contact with thefixed assembly 2-FA, and the first end portion 2-1063 and the second endportion 2-1064 are arranged in the first direction 2-D1.

Please refer to FIG. 16 and FIG. 18 . FIG. 18 is a cross-sectional viewof the optical element driving mechanism 2-100 along the YZ planeaccording to an embodiment of the present disclosure. As shown in FIG.16 and FIG. 18 , the fixed member 2-106 further includes a first fixedsurface 2-1071, a second fixed surface 2-1072, a third fixed surface2-1073, and a fourth fixed surface 2-1074, a fifth fixed surface 2-1075,a sixth fixed surface 2-1076, and a seventh fixed surface 2-1077.

The first fixed surface 2-1071 is located at the first end portion2-1063 and is perpendicular to the first direction 2-D1. The secondfixed surface 2-1072 is located at the first end portion 2-1063 and isparallel to the first surface 2-MS1. The third fixed surface 2-1073 islocated at the first end portion 2-1063, and the second fixed surface2-1072 and the third fixed surface 2-1073 face in opposite directions.The fourth fixed surface 2-1074 is located at the first end portion2-1063 and is perpendicular to the first fixed surface 2-1071 and thesecond fixed surface 2-1072. The fifth fixed surface 2-1075 and thefirst fixed surface 2-1071 face in opposite directions.

The first fixed surface 2-1071 is located at the first fixed element2-1061, the second fixed surface 2-1072 is located at the first fixedelement 2-1061, the third fixed surface 2-1073 is located at the firstpermeability element 2-CM1, the fourth fixed surface 2-1074 is locatedat the first fixed element 2-1061, and the fifth fixed surface 2-1075 islocated at the first fixed element 2-1061.

The sixth fixed surface 2-1076 is located at the second end portion2-1064 and is perpendicular to the first direction 2-D1. The seventhfixed surface 2-1077 and the sixth fixed surface 2-1076 face theopposite directions. The sixth fixed surface 2-1076 is located at thesecond fixed element 2-1062, and the seventh fixed surface 2-1077 islocated at the second fixed element 2-1062.

As shown in FIG. 16 , in the first direction 2-D1, the shortest distancebetween the first fixed surface 2-1071 and the fixed assembly 2-FA isshorter than the shortest distance between the fifth fixed surface2-1075 and the fixed assembly 2-FA. Specifically, the shortest distancebetween the first fixed surface 2-1071 and the base 2-104 in the firstdirection 2-D1 is not zero. That is, the first fixed surface 2-1071 doesnot contact the base 2-104.

In a direction that is perpendicular to the second fixed surface 2-1072,such as in the third direction 2-D3, the shortest distance between thesecond fixed surface 2-1072 and the fixed assembly 2-FA is greater thanthe shortest distance between third fixed surface 2-1073 and the fixedassembly 2-FA. For example, the third fixed surface 2-1073 contacts thebase 2-104, but the second fixed surface 2-1072 does not contact thebase 2-104.

Furthermore, the shortest distance between the first fixed surface2-1071 and the fixed assembly 2-FA is greater than the shortest distancebetween the fourth fixed surface 2-1074 and the fixed assembly 2-FA.Specifically, the fourth fixed surface 2-1074 contacts the base 2-104,but the first fixed surface 2-1071 does not contact the base 2-104.

When viewed in the first direction 2-D1, the fifth fixed surface 2-1075overlaps at least a part of the seventh fixed surface 2-1077. In thefirst direction 2-D1, the shortest distance between the sixth fixedsurface 2-1076 and the fixed assembly 2-FA is shorter than the shortestdistance between the seventh fixed surface 2-1077 and the fixed assembly2-FA.

Based on the above structural design, the fixed member 2-106 can beaccurately positioned on the base 2-104, and the overall structuralstrength can be increased.

Please refer to FIG. 13 , FIG. 16 , and FIG. 19 . FIG. 19 is an enlargedview of the optical element driving mechanism 2-100 according to anembodiment of the present disclosure. In this embodiment, the base 2-104of the fixed assembly 2-FA further includes a positioning assembly 2-PA,which is configured to position the fixed member 2-106. The positioningassembly 2-PA has a protruding structure and extends along a direction(the Z-axis) perpendicular to the first direction 2-D1 and the thirddirection 2-D3.

Furthermore, the optical element driving mechanism 2-100 includes amagnetic-adjusting element 2-AE, located between the first loading part2-108 and the second loading part 2-112, and is configured to adjust themagnetic force between the first magnetic element 2-ME1 and the secondmagnetic element 2-ME2 so as to avoid mutual magnetic interferencebetween the first magnetic element 2-ME2 and the second magnetic element2-ME2 to affect the movement of the first movable assembly 2-MA1 and thesecond movable assembly 2-MA2.

The magnetic-adjusting element 2-AE is fixedly disposed on thepositioning assembly 2-PA, and the magnetic-adjusting element 2-AE mayhave a U-shaped structure. The magnetic-adjusting element 2-AE may havea metal material, for example, but it is not limited thereto.

Please continue to refer to FIG. 13 to FIG. 19 . The optical elementdriving mechanism 2-100 further includes a guiding rod 2-120 configuredto guide the first movable assembly 2-MA1 to move in the first direction2-D1 relative to the fixed assembly 2-FA. The guiding rod 2-120 has anlong strip-shaped structure extending in the first direction 2-D1. Theguiding rod 2-120 passes through the first loading part 2-108 of thefirst movable assembly 2-MA1. When viewed in a fourth direction 2-D4(the Z-axis) which is perpendicular to the first direction 2-D1 and thethird direction 2-D3, the guiding rod 2-120 overlaps at least a part ofthe first movable assembly 2-MA1.

Similarly, the guiding rod 2-120 is configured to guide the secondmovable assembly 2-MA2 to move in the first direction 2-D1 relative tothe fixed assembly 2-FA. The guiding rod 2-120 passes through the secondloading part 2-112 of the second movable assembly 2-MA2. When viewed inthe fourth direction 2-D4, the guiding rod 2-120 overlaps at least apart of the second movable assembly 2-MA2.

In this embodiment, the shortest distance between the first drivingassembly 2-DA1 and the guiding rod 2-120 is the same as the shortestdistance between the second driving assembly 2-DA2 and the guiding rod2-120. For example, as shown in FIG. 16 , the shortest distance betweenthe first coil 2-CL1 and the guiding rod 2-120 is the same as theshortest distance between the second coil 2-CL2 and the guiding rod2-120 (in the third direction 2-D3).

In addition, as shown in FIG. 17 , the shortest distance between thefirst magnetic element 2-ME1 and the guiding rod 2-120 is the same asthe shortest distance between the second magnetic element 2-ME2 and theguiding rod 2-120 (in the third direction 2-D3). Similarly, the shortestdistance between the first magnetic-enhancing element 2-SM1 and theguiding rod 2-120 is the same as the shortest distance between thesecond magnetic-enhancing element 2-SM2 and the guiding rod 2-120 (inthe third direction 2-D3).

As shown in FIG. 17 , the shortest distance between the firstpermeability element 2-CM1 and the guiding rod 2-120 is different fromthe shortest distance between the second permeability element 2-CM2 andthe guiding rod 2-120. Specifically, the shortest distance between thefirst permeability element 2-CM1 and the guiding rod 2-120 is shorterthan the shortest distance between the second permeability element 2-CM2and the guiding rod 2-120 (in the third direction 2-D3).

In this embodiment, the first loading part 2-108 is configured to loadthe first magnetic element 2-ME1, and the second loading part 2-112 isconfigured to load the second magnetic element 2-ME2. In addition, asshown in FIG. 16 , the fixed assembly 2-FA further has a first blockingportion 2-104P disposed between the first loading part 2-108 and thesecond loading part 2-112. The first blocking portion 2-104P and thepositioning assembly 2-PA are integrally formed in one piece.

The first blocking portion 2-104P is configured to block the firstmovable assembly 2-MA1 in the first extreme range 2-ER1, and the firstblocking portion 2-104P is configured to block the second movableassembly 2-MA2 in the second extreme range 2-ER2. For example, when thefirst movable assembly 2-MA1 moves to the leftmost side of the firstextreme range 2-ER1, the first movable assembly 2-MA1 contacts the firstblocking portion 2-104P. In addition, when the second movable assembly2-MA2 moves to the rightmost side of the second extreme range 2-ER2, thesecond movable assembly 2-MA2 contacts the first blocking portion2-104P.

As shown in FIG. 16 , FIG. 17 , and FIG. 19 , the guiding rod 2-120passes through the first loading part 2-108, the first blocking portion2-104P, and the second loading part 2-112, and the guiding rod 2-120 isfixedly disposed on the fixed assembly 2-FA. Specifically, a trench2-104T and a groove 2-104G may be formed on the first blocking portion2-104P, and they are communicated with each other. The guiding rod 2-120is disposed in the trench 2-104T, and the magnetic-adjusting element2-AE surrounds a part of the groove 2-104G. The optical element drivingmechanism 2-100 may further include a gluing element 2-GE (such asglue), which flows into the groove 2-104G and then flows to the trench2-104T, so that the magnetic-adjusting element 2-AE and the guiding rod2-120 can be firmly affixed to the positioning assembly 2-PA and thefirst blocking portion 2-104P.

Based on the above structural configuration, the purpose ofminiaturization can be achieved, and the overall balance can also beachieved.

In addition, as shown in FIG. 13 , FIG. 17 , and FIG. 18 , the opticalelement driving mechanism 2-100 further includes a circuit assembly2-160 and a control element 2-162. The circuit assembly 2-160 is, forexample, a flexible circuit board, and the control element 2-162 is, forexample, a control integrated circuit (IC), which is disposed on thecircuit assembly 2-160.

The control element 2-162 is configured to control the first drivingassembly 2-DA1 to drive the movement of the first movable assembly 2-MA1relative to the fixed assembly 2-FA, and the control element 2-162 isconfigured to control the second driving assembly 2-DA2 to drive Thesecond movable assembly 2-MA2 moves relative to the fixed assembly 2-FA.

Next, please refer to FIG. 13 , FIG. 17 , and FIG. 20 . FIG. 20 is aperspective view of a partial structure of the optical element drivingmechanism 2-100 according to an embodiment of the present disclosure. Inthis embodiment, the optical element driving mechanism 2-100 may furtherinclude a first guiding assembly 2-GA1, which is in direct contact withthe guiding rod 2-120, and the first guiding assembly 2-GA1 includes atleast two first guiding elements 2-121, disposed in the first loadingpart 2-108 of the first movable assembly 2-MA1. These first guidingelements 2-121 are configured to be in contact with the guiding rod2-120.

When viewed in the first direction 2-D1 or the fourth direction 2-D4(the Z-axis), the first magnetic element 2-ME1 is located between thesefirst guiding elements 2-121 and the first permeability element 2-CM1.It is worth noting that, as shown in FIG. 14 , when viewed in the firstdirection 2-D1 (the Y-axis), an included angle AG formed by the lineconnecting the centers of these first guiding elements 2-121 and theguiding rod 2-120 is greater than 0 degrees and less than 180 degrees.

In this embodiment, each of the first guiding elements 2-121 has aspherical structure, at least two first grooves 2-108C are formed in thefirst loading part 2-108 of the first movable assembly 2-MA1, and thesefirst guiding elements 2-121 are respectively fixed in these firstgrooves 2-108C. Therefore, when the first loading part 2-108 of thefirst movable assembly 2-MA1 moves along the guiding rod 2-120, thesefirst guiding elements 2-121 do not rotate relative to these firstgrooves 2-108C.

As shown in FIG. 17 and FIG. 20 , in this embodiment, a plurality offirst guiding assemblies 2-GA1 (for example, two first guidingassemblies 2-GA1) may be disposed in the first loading part 2-108 andmay be arranged in the first direction 2-D1. Based on disposing twopairs of first guiding elements 2-121 on opposite sides of the firstloading part 2-108, the stability of the first loading part 2-108 whenmoving can be ensured.

In addition, as shown in FIG. 14 and FIG. 20 , the first loading part2-108 contacts the guiding rod 2-120 only through these first guidingassemblies 2-GA1, and the first loading part 2-108 does not contact theguiding rod 2-120 directly. Specifically, as shown in FIG. 14 , amagnetic attraction force is generated between the first magneticelement 2-ME1 and the first permeability element 2-CM1 to attract thefirst loading part 2-108 along the third direction 2-D3 toward the firstfixed element 2-1061, so that the guiding rod 2-120 can reliably be incontact with the first guiding elements 2-121. Based on the abovestructural configuration, the stability of the first loading part 2-108when moving in the first direction 2-D1 can be further ensured.

Similarly, the optical element driving mechanism 2-100 further includesa second guiding assembly 2-GA2, which is in direct contact with theguiding rod 2-120, and the second guiding assembly 2-GA2 includes atleast two second guiding elements 2-122 disposed in the second loadingpart 2-112 of the second movable assembly 2-MA2. These second guidingelements 2-122 are configured to be in contact with the guiding rod2-120.

When viewed in the first direction 2-D1 or the fourth direction 2-D4,the second magnetic element 2-ME2 is located between the two secondguiding elements 2-122 and the second permeability element 2-CM2. It isworth noting that, as shown in FIG. 15 , when viewed in the firstdirection 2-D1, the included angle formed by the line connecting thecenters of the second guiding elements 2-122 and the guiding rod 2-120is greater than 0 degrees and less than 180 degrees.

In this embodiment, each of these second guiding elements 2-122 has aspherical structure, at least two second grooves 2-112C are formed inthe second loading part 2-112 of the second movable assembly 2-MA2, andthese the second guiding element 2-122 are respectively fixed in the twosecond grooves 2-112C. Therefore, when the second loading part 2-112 ofthe second movable assembly 2-MA2 moves along the guiding rod 2-120,these second guiding elements 2-122 do not rotate relative to the secondgrooves 2-112C.

As shown in FIG. 17 and FIG. 20 , in this embodiment, a plurality ofsecond guiding assemblies 2-GA2 may be disposed in the second loadingpart 2-112 and may be arranged in the first direction 2-D1. Based ondisposing two pairs of second guiding elements 2-122 on opposite sidesof the second loading part 2-112, the stability of the second loadingpart 2-112 when moving can be ensured.

In addition, as shown in FIG. 15 and FIG. 20 , the second loading part2-112 contacts the guiding rod 2-120 only through these second guidingassemblies 2-GA2, and the second loading part 2-112 does not contact theguiding rod 2-120 directly. Similarly, based on the above structuralconfiguration, the stability of the second loading part 2-112 whenmoving can be further ensured.

Next, please refer to FIG. 21 and FIG. 22 . FIG. 21 is a perspectiveview of a partial structure of the optical element driving mechanism2-100 according to another embodiment of the present disclosure, andFIG. 22 is a cross-sectional view of the optical element drivingmechanism 2-100 along the XZ plane according to another embodiment of tothe present disclosure. In this embodiment, the configurations of thefirst loading part 2-108, the first guiding assemblies 2-GA1, and theguiding rod 2-120 are the same as those in the previous embodiment, sothey are not be repeated herein.

In this embodiment, the optical element driving mechanism 2-100 mayfurther include at least one second guiding assembly 2-GA2, which isdispose in the second loading part 2-112, and the guiding rod 2-120passes through the second guiding assembly 2-GA2. For example, thesecond guiding assembly 2-GA2 may be a through hole formed on the secondloading part 2-112.

When viewed in the first direction 2-D1, the second guiding assembly2-GA2 may include a first contacting slope 2-1121, a second contactingslope 2-1122, and a middle surface 2-1123. The middle surface 2-1123 isnot parallel to the first contacting slope 2-1121 and the secondcontacting slope 2-1122, and the middle surface 2-1123 is connected tothe first contacting slope 2-1121 and the second contacting slope2-1122. In this embodiment, the middle surface 2-1123 may be an arcsurface, but it is not limited thereto.

As shown in FIG. 22 , when viewed in the first direction 2-D1, thesecond magnetic element 2-ME2 of the second driving assembly 2-DA2 islocated between the first contacting slope 2-1121 and the secondpermeability element 2-CM2. The second magnetic element 2-ME2 and thesecond permeability element 2-CM2 can be collectively referred to as asecond pressing assembly configured to generate a magnetic attractionforce (or gravity or repulsive force) to attract the second loading part2-112 toward the second fixed element 2-1062, so that the guiding rod2-120 can reliably be in contact with the first contacting slope 2-1121and the second contacting slope 2-1122. Specifically, the firstcontacting slope 2-1121 and the second contacting slope 2-1122 areconfigured to be in contact with the guiding rod 2-120.

In this embodiment, when viewed in the first direction 2-D1, theincluded angle between the first contacting slope 2-1121 and the secondcontacting slope 2-1122 may be greater than 45 degrees and less than 180degrees.

Furthermore, as shown in FIG. 21 , a plurality of second guidingassemblies 2-GA2 (the through holes) are disposed in the second loadingpart 2-112 and may be arranged in the first direction 2-D1. The secondloading part 2-112 contacts the guiding rod 2-120 only through thesesecond guiding assemblies 2-GA2. That is, the guiding rod 2-120 does notcontact the middle surface 2-1123.

It is worth noting that dry lubricating oil or wet lubricating oil canbe disposed on the guiding rod 2-120 to ensure that the first loadingpart 2-108 and the second loading part 2-112 can move along the guidingrod 2-120 smoothly.

In addition, it should be noted that the implementation of the firstguiding assembly 2-GA1 and the second guiding assembly 2-GA2 is notlimited to the above-mentioned embodiment. For example, theimplementation of first guiding assembly 2 -GA1 and that of the secondguiding assembly 2-GA2 can be exchanged or the same. For example, boththe first guiding assembly 2-GA1 and the second guiding assembly 2-GA2may be through holes having the first contacting slope 2-1121, thesecond contacting slope 2-1122 and the middle surface 2-1123.

Please refer to FIG. 17 , FIG. 23 , and FIG. 24 . FIG. 23 is aperspective view of a partial structure of the optical element drivingmechanism 2-100 according to an embodiment of the present disclosure,and FIG. 24 is a cross-sectional view of the optical element drivingmechanism 2-100 along the YZ plane according to an embodiment of thepresent disclosure. The optical element driving mechanism 2-100 furtherincludes a first guiding member 2-131 and a second guiding member 2-132which are fixedly disposed on the frame 2-105 of the fixed assembly2-FA.

The first guiding member 2-131 and the second guiding member 2-132respectively correspond to the first sliding part 2-109 and the secondsliding part 2-113, and the first guiding member 2-131 and the secondguiding member 2-132 have a plate-shaped structure. As shown in FIG. 23and FIG. 24 , a first sliding member 2-133 and a first magnet 2-MG1 aredisposed on the first sliding part 2-109.

When viewed in the first direction 2-D1, the first sliding member 2-133is located between the first magnet 2-MG1 and the first guiding member2-131. The first magnet 2-MG1 and the first guiding member 2-131 areconfigured to generate a first magnetic attraction force, so that thefirst sliding part 2-109 drives the first sliding member 2-133 tocontact the first guiding member 2-131.

Similarly, a second sliding member 2-134 and a second magnet 2-MG2 aredisposed on the second sliding part 2-113. When viewed in the seconddirection 2-D2, the second sliding member 2-134 is located between thesecond magnet 2-MG2 and the second guiding member 2-132.

The second magnet 2-MG2 and the second guiding member 2-132 areconfigured to generate a second magnetic attraction force, so that thesecond sliding part 2-113 drives the second sliding member 2-134 tocontact the second guiding member 2-132. In this embodiment, the firstsliding member 2-133 and the second sliding member 2-134 each have aspherical structure and can roll relative to the first sliding part2-109 and the second sliding part 2-113, respectively.

Based on the above structural configuration, it can be ensured that thefirst sliding part 2-109 and the second sliding part 2-113 can stablymove along the first guiding member 2-131 and the second guiding member2-132, respectively.

In this embodiment, the length of the first guiding member 2-131 in thefirst direction 2-D1 (the Y-axis) is different from the length of thesecond guiding member 2-132 in the first direction 2-D1. For example,the length of the first guiding member 2-131 is smaller than the lengthof the second guiding member 2-132.

Furthermore, in the fourth direction 2-D4 perpendicular to the firstdirection 2-D1 and the third direction 2-D3, the size of the firstguiding member 2-131 is different from the size of the second guidingmember 2-132. Specifically, in the fourth direction 2-D4 (the Z-axis),the size (such as the thickness) of the first guiding member 2-131 issmaller than the size (such as thickness) of the second guiding member2-132.

As shown in FIG. 17 , when viewed in the fourth direction 2-D4 (theZ-axis), the center of the first guiding element 2-121 of the firstguiding assembly 2-GA1 on the right side, the center of the firstguiding element 2-121 of the first guiding assembly 2-GA1 on the leftside, and the center of the first sliding member 2-133 form a triangularstructure, which can surround the center of the first optical element2-OE1.

Similarly, when viewed in the fourth direction 2-D4, the center of thesecond guiding element 2-122 of the second guiding assembly 2-GA2 on theright side, the center of the second guiding element 2-122 of the secondguiding assembly 2-GA2 on the left side, and the center of the secondsliding member 2-134 form a triangular structure, which can surround thecenter of the second optical element 2-OE2.

Please go back to FIG. 16 and FIG. 17 . As shown in the figures, theoptical element driving mechanism 2-100 further includes two firstcushioning elements 2-141disposed on opposite sides of the first loadingpart 2-108 along the first direction 2-D1. Furthermore, the opticalelement driving mechanism 2-100 may further include two secondcushioning elements 2-142 disposed on opposite sides of the secondloading part 2-112 along the first direction 2-D1.

These first cushioning elements 2-141 are configured to contact thefirst blocking portion 2-104P or a front side portion 2-1042 of thefixed assembly 2-FA when the first loading part 2-108 moves in the firstextreme range 2-ER1, and these second cushioning elements 2-142 areconfigured to contact the first blocking portion 2-104P or a rear sideportion 2-1044 of the fixed assembly 2-FA when the second loading part2-112 moves in the second extreme range 2-ER2.

The first cushioning elements 2-141 and the second cushioning elements2-142 can be made of sponge, rubber or a silicone material.

Similarly, the fixed assembly 2-FA further includes a second blockingportion 2-105P disposed between the first sliding part 2-109 and thesecond sliding part 2-113 and configured to block the first sliding part2-109 and the second sliding part 2-113. In addition, cushioningelements can also be disposed on both sides of the first sliding part2-109 and both sides of the second sliding part 2-113 to ensure that thefirst sliding part 2-109 and the second sliding part 2-113 are notdamaged in collisions.

The maximum length 2-112L of the second loading part 2-112 in the firstdirection 2-D1 is greater than the maximum length 2-113L of the secondsliding part 2-113 in the first direction 2-D1. In the third direction2-D3, the maximum size 2-108W of the first loading part 2-108 is greaterthan the maximum size 2-109W of the first sliding part 2-109.

Furthermore, the length 2-PL1 of the first blocking portion 2-104P inthe first direction 2-D1 is less than the length 2-PL2 of the secondblocking portion 2-D1 in the first direction 2-D1. Based on the abovestructural design, the structural strength of the second blockingportion 2-105P can be increased to avoid damage caused by collision.

Please return to FIG. 16 . In this embodiment, the optical elementdriving mechanism 2-100 may further include a third optical element2-OE3, which is fixedly connected to the base 2-104. The third opticalelement 2-OE3 can be a lens configured to diffuse or converge a lightbeam 2-L. The base 2-104 has a concave structure 2-1041, correspondingto the third optical element 2-OE3.

Similarly, the third optical element 2-OE3 is fixedly connected to frame2-105. Specifically, the frame 2-105 has a concave structure 2-1051,corresponding to the third optical element 2-OE3.

The light beam 2-L passes through the third optical element 2-OE3, thefirst optical element 2-OE1, and the second optical element 2-OE2 insequence to be incident on a photosensitive assembly 2-190. Thephotosensitive assembly 2-190 may include a photosensitive element (notshown in the figures) configured to receive the light beam 2-L togenerate a digital image signal. In this embodiment, the photosensitiveassembly 2-190 can be affixed to the base 2-104, for example.

Next, please refer to FIG. 16 and FIG. 25 , and FIG. 25 is a schematicdiagram of the optical element driving mechanism 2-100 in another viewaccording to an embodiment of the present disclosure. The third opticalelement 2-OE3, the first movable assembly 2-MA1, the second movableassembly 2-MA2, and the photosensitive assembly 2-190 are arranged insequence along a main axis 2-AX.

In this embodiment, the first movable assembly 2-MA1 has a firstreceiving groove 2-RS1 corresponding to the first optical element 2-OE1,and the second movable assembly 2-MA2 has a second receiving groove2-RS2 corresponding to the second optical element 2-OE2.

The first optical element 2-OE1 is affixed to the first receiving groove2-RS1 by a first adhesive element 2-AD1. Specifically, the firstadhesive element 2-AD1 is disposed in the first receiving groove 2-RS1,and the first receiving groove 2-RS1 is recessed from a first containingsurface 2-108S of the first movable assembly 2-MA1.

The first receiving groove 2-RS1 further includes a first fillingportion 2-RS11 and a first narrow portion 2-RS12, and in the firstdirection 2-D1, the maximum size of the first filling portion 2-RS11 isgreater than that of the first narrow portion 2-RS12. The first narrowportion 2-RS12 is closer to the first optical element 2-OE1 than thefirst filling portion 2-RS11.

Similarly, the second optical element 2-OE2 is affixed to the secondreceiving groove 2-RS2 by a second adhesive element 2-AD2. Specifically,the second adhesive element 2-AD2 is disposed in the second receivinggroove 2-RS2, and the second receiving groove 2-RS2 is recessed from asecond containing surface 2-112S of the second movable assembly 2-MA2.

The second receiving groove 2-RS2 further includes a second fillingportion 2-RS21 and a second narrow portion 2-RS22, and in the seconddirection 2-D2, the maximum size of the second filling portion 2-RS21 isgreater than that of the second narrow portion 2-RS22.

In addition, in the first direction 2-D1, the maximum size of the firstnarrow portion 2-RS12 is less than the maximum size of the second narrowportion 2-RS22, and in the first direction 2-D1, the maximum size of thefirst filling portion 2-RS11 is smaller than the maximum size of thesecond filling portion 2-RS21.

Furthermore, in this embodiment, in the first direction 2-D1, themaximum size of the first optical element 2-OE1 is different from themaximum size of the second optical element 2-OE2. Specifically, in thefirst direction 2-D1, the maximum size of the first optical element2-OE1 is smaller than the maximum size of the second optical element2-OE2.

In summary, the present disclosure provides an optical element drivingmechanism 2-100, including the first driving assembly 2-DA1 and thesecond driving assembly 2-DA2 configured to respectively drive the firstmovable assembly 2-MA1 and the second movable assembly 2-MA2 to movealong the first dimension. The first movable assembly 2-MA1 and thesecond movable assembly 2-MA2 respectively hold the first opticalelement 2-OE1 and the second optical element 2-OE2, and the firstmovable assembly 2-MA1 and the second movable assembly 2-MA2 can beindividually or cooperatively driven so as to achieve the function ofoptical zoom.

In addition, the optical element driving mechanism 2-100 may include aguiding rod 2-120 passing through the first movable assembly 2-MA1 andthe second movable assembly 2-MA2, so that the first movable assembly2-MA1 and the second movable assembly 2-MA2 can move steadily in thefirst direction 2-D1. In addition, the first driving assembly 2-DA1includes the first permeability element 2-CM1 and the first magneticelement 2-ME1, the first permeability element 2-CM1 is affixed to thefixed member 2-106, and the first magnetic element 2-ME1 is affixed tothe first movable assembly 2-MA1. Based on the magnetic attraction forcebetween the first permeability element 2-CM1 and the first magneticelement 2-ME1, the stability of the first movable assembly 2-MA1 whenmoving along the guiding rod 2-120 can be further improved.

Although the embodiments and their advantages have been described indetail, it should be understood that various changes, substitutions, andalterations can be made herein without departing from the spirit andscope of the embodiments as defined by the appended claims. Moreover,the scope of the present application is not intended to be limited tothe particular embodiments of the process, machine, manufacture,composition of matter, means, methods, and steps described in thespecification. As one of ordinary skill in the art will readilyappreciate from the disclosure, processes, machines, manufacture,compositions of matter, means, methods, or steps, presently existing orlater to be developed, that perform substantially the same function orachieve substantially the same result as the corresponding embodimentsdescribed herein can be utilized according to the disclosure.Accordingly, the appended claims are intended to include within theirscope such processes, machines, manufacture, compositions of matter,means, methods, or steps. In addition, each claim constitutes a separateembodiment, and the combination of various claims and embodiments arewithin the scope of the disclosure.

What is claimed is:
 1. An optical element driving mechanism, comprising:a first movable assembly, configured to be connected to a first opticalelement; a fixed assembly, wherein the first movable assembly is movablerelative to the fixed assembly; and a first driving assembly, configuredto drive the first movable assembly to move relative to the fixedassembly; wherein the optical element driving mechanism further includesa sensing assembly electrically connected to the first driving assemblyto sense movement of the first movable assembly.
 2. The optical elementdriving mechanism as claimed in claim 1, wherein the first drivingassembly includes: a first coil; a first permeability element,corresponding to the first coil; a first magnetic element, correspondingto the first coil and configured to generate a first driving force,wherein the first magnetic element has a first surface which faces thefirst coil; a first magnetic-enhancing element, corresponding to thefirst magnetic element and configured to adjust the magnetic field ofthe first magnetic element; and a first fixed element, fixedly connectedto the first permeability element; the first permeability element has ametal material; the first coil is wound around the first permeabilityelement; the first magnetic-enhancing element is fixedly connected tothe first magnetic element; the first fixed element has a plasticmaterial.
 3. The optical element driving mechanism as claimed in claim1, wherein when viewed in a first direction parallel to the firstsurface, at least a part of the first coil is located between the firstmagnetic element and the first permeability element; when viewed in thefirst direction, at least a part of the first fixed element is locatedbetween the first permeability element and the first coil; when viewedin the first direction, at least a part of the first fixed element islocated between the first permeability element and the first magneticelement.
 4. The optical element driving mechanism as claimed in claim 3,wherein the first driving assembly is configured to drive the firstmovable assembly to move relative to the fixed assembly in a firstdimension; the optical element driving mechanism further includes asecond movable assembly configured to be connected to a second opticalelement, and the second movable assembly is movable relative to thefixed assembly; the first optical element includes a lens; the secondoptical element includes a lens; the second movable assembly is movablerelative to the first movable assembly; the optical element drivingmechanism further includes a second driving assembly configured to drivethe second movable assembly to move relative to the fixed assembly; thesecond driving assembly is configured to drive the second movableassembly to move in a second dimension relative to the first movableassembly.
 5. The optical element driving mechanism as claimed in claim4, wherein the second driving assembly includes: a second coil; a secondpermeability element, corresponding to the second coil; a secondmagnetic element, corresponding to the second coil and configured togenerate a second driving force, wherein the second magnetic element hasa second surface which faces the second coil; a secondmagnetic-enhancing element, corresponding to the second magnetic elementand configured to adjust the magnetic field of the second magneticelement; and a second fixed element, fixedly connected to the secondpermeability element; the second magnetic-enhancing element is fixedlyconnected to the second magnetic element; the second permeabilityelement has a metal material; the second coil is wound around the secondpermeability element; the second fixed element has a plastic material;when viewed in a second direction parallel to the second surface, atleast a part of the second coil is located between the second magneticelement and the second permeability element; when viewed in the seconddirection, at least a part of the second fixed element is locatedbetween the second permeability element and the second coil; when viewedin the second direction, at least a part of the second fixed element islocated between the second permeability element and the second magneticelement.
 6. The optical element driving mechanism as claimed in claim 5,wherein the first movable assembly is movable relative to the fixedassembly in the first dimension within a first extreme range; the secondmovable assembly is movable relative to the fixed assembly in the firstdimension within a second extreme range; the first extreme range isdifferent from the second extreme range; the first extreme range issmaller than the second extreme range; movement in the first dimensionis a linear movement in the first direction; movement in the seconddimension is a linear movement in the second direction; the firstdirection is parallel to the second direction.
 7. The optical elementdriving mechanism as claimed in claim 6, wherein in a third directionperpendicular to the first surface, minimum sizes of the firstpermeability element and the second permeability element are different;in the third direction, the minimum size of the first permeabilityelement is greater than the minimum size of the second permeabilityelement; a shortest distance between the first magnetic element and thefirst coil is different from a shortest distance between the secondmagnetic element and the second coil; the shortest distance between thefirst magnetic element and the first coil is shorter than the shortestdistance between the second magnetic element and the second coil.
 8. Theoptical element driving mechanism as claimed in claim 7, wherein in thethird direction, a maximum size of the first magnetic element isdifferent from a maximum size of the second magnetic element; in thethird direction, the maximum size of the first magnetic element isgreater than the maximum size of the second magnetic element; in thefirst direction, a maximum size of the first magnetic element isdifferent from a maximum size of the second magnetic element; in thefirst direction, the maximum size of the first magnetic element is lessthan the maximum size of the second magnetic element.
 9. The opticalelement driving mechanism as claimed in claim 8, wherein when viewed inthe first direction, a surface of the first permeability elementperpendicular to the third direction overlaps at least a part of thesecond permeability element; the first fixed element and the secondfixed element form a fixed member; the second fixed element and thefirst fixed element have an integrally formed structure; in the firstdirection, a first end portion of the fixed member having a longstrip-shaped structure is not in contact with the fixed assembly; in thefirst direction, a second end portion of the fixed member is not incontact with the fixed assembly, and the first end portion and thesecond end portion are arranged along the first direction.
 10. Theoptical element driving mechanism as claimed in claim 9, wherein thefixed member includes: a first fixed surface, located at the first endportion and perpendicular to the first direction; a second fixedsurface, located at the first end portion and parallel to the firstsurface; a third fixed surface, located at the first end portion,wherein the third fixed surface and the second fixed surface face inopposite directions; a fourth fixed surface, located at the first endportion and perpendicular to the first fixed surface and the secondfixed surface; a fifth fixed surface, wherein the fifth fixed surfaceand the first fixed surface face in opposite directions; a sixth fixedsurface, located at the second end portion and perpendicular to thefirst direction; and a seventh fixed surface, wherein the seventh fixedsurface and the sixth fixed surface face in opposite directions; thefirst fixed surface is located at the first fixed element; the secondfixed surface is located at the first fixed element; the third fixedsurface is located at the first permeability element; the fourth fixedsurface is located at the first fixed element; the fifth fixed surfaceis located at the first fixed element; the sixth fixed surface islocated at the second fixed element; the seventh fixed surface islocated at the second fixed element.
 11. The optical element drivingmechanism as claimed in claim 10, wherein in the first direction, ashortest distance between the first fixed surface and the fixed assemblyis shorter than a shortest distance between the fifth fixed surface andthe fixed assembly; in a direction perpendicular to the second fixedsurface, a shortest distance between the second fixed surface and thefixed assembly is greater than a shortest distance between the thirdfixed surface and the fixed assembly; the shortest distance between thefirst fixed surface and the fixed assembly is greater than a shortestdistance between the fourth fixed surface and the fixed assembly; whenviewed in the first direction, the fifth fixed surface overlaps at leasta part of the seventh fixed surface; in the first direction, a shortestdistance between the sixth fixed surface and the fixed assembly isshorter than a shortest distance between the seventh fixed surface andthe fixed assembly.
 12. The optical element driving mechanism as claimedin claim 11, wherein the fixed assembly further includes a positioningassembly configured to position the fixed member; the positioningassembly has a protruding structure and extends in a directionperpendicular to the first direction and the third direction; theoptical element driving mechanism further includes a magnetic-adjustingelement configured to adjust magnetic force between the first magneticelement and the second magnetic element to avoid mutual magneticinterference between the first magnetic element and the second magneticelement to affect movement of the first movable assembly and the secondmovable assembly; the magnetic-adjusting element is fixedly disposed onthe positioning assembly; the magnetic-adjusting element has a U-shapedstructure.
 13. The optical element driving mechanism as claimed in claim12, wherein the optical element driving mechanism further includes afirst guiding assembly configured to guide the first movable assembly tomove in the first direction relative to the fixed assembly; the firstguiding assembly includes a guiding rod having a long strip-shapedstructure extending in the first direction; the guiding rod passesthrough the first movable assembly; when viewed in a fourth directionperpendicular to the first direction and the third direction, theguiding rod overlaps at least a part of the first movable assembly; thefirst guiding assembly is configured to guide the second movableassembly to move in the first direction relative to the fixed assembly;the guiding rod passes through the second movable assembly; when viewedin the fourth direction, the guiding rod overlaps at least a part of thesecond movable assembly; a shortest distance between the first drivingassembly and the guiding rod is the same as a shortest distance betweenthe second driving assembly and the guiding rod; a shortest distancebetween the first coil and the guiding rod is the same as a shortestdistance between the second coil and the guiding rod; a shortestdistance between the first magnetic element and the guiding rod is thesame as a shortest distance between the second magnetic element and theguiding rod; a shortest distance between the first magnetic-enhancingelement and the guiding rod is the same as a shortest distance betweenthe second magnetic-enhancing element and the guiding rod; a shortestdistance between the first permeability element and the guiding rod isdifferent from a shortest distance between the second permeabilityelement and the guiding rod; the shortest distance between the firstpermeability element and the guiding rod is shorter than a shortestdistance between the second permeability element and the guiding rod.14. The optical element driving mechanism as claimed in claim 13,wherein the sensing assembly includes: a first reference element, havinga long strip-shaped structure; a first sensing element, corresponding tothe first reference element and configured to sense the movement of thefirst movable assembly relative to the fixed assembly; a secondreference element, having a long strip-shaped structure; a thirdreference element, having a long strip-shaped structure; a fourthreference element, having a long strip-shaped structure; and a secondsensing element, corresponding to the third reference element andconfigured to sense movement of the second movable assembly relative tothe fixed assembly; the extension directions of the first referenceelement and the second reference element are not parallel; a length ofthe first reference element is the same as a length of the secondreference element.
 15. The optical element driving mechanism as claimedin claim 14, wherein when viewed in the first direction, the firstreference element overlaps at least a part of the second referenceelement; when viewed in the first direction, the first reference elementdoes not overlap the first sensing element; when viewed in the fourthdirection, the first reference element overlaps at least a part of theguiding rod; when viewed in the fourth direction, the first sensingelement overlaps at least a part of the guiding rod; when viewed in thefourth direction, the first driving assembly does not overlap theguiding rod.
 16. The optical element driving mechanism as claimed inclaim 15, wherein the extension directions of the third referenceelement and the fourth reference element are not parallel; a length ofthe third reference element is the same as a length of the fourthreference element; the length of the first reference element isdifferent from the length of the third reference element; the length ofthe first reference element is less than the length of the thirdreference element; when viewed in the first direction, the thirdreference element overlaps at least a part of the fourth referenceelement; when viewed in the first direction, the third reference elementdoes not overlap the second sensing element; when viewed in the fourthdirection, the third reference element overlaps at least a part of theguiding rod; when viewed in the fourth direction, the second sensingelement overlaps at least a part of the guiding rod; when viewed in thefourth direction, the second driving assembly does not overlap theguiding rod.
 17. The optical element driving mechanism as claimed inclaim 16, wherein the optical element driving mechanism further includesa control element configured to control the first driving assembly todrive the first movable assembly to move relative to the fixed assembly;the control element is configured to control the second driving assemblyto drive the second movable assembly to move relative to the fixedassembly; the control element is electrically connected to the firstsensing element; the control element is electrically connected to thesecond sensing element; when viewed in the fourth direction, the controlelement is located between the first driving assembly and the seconddriving assembly; when viewed in the fourth direction, the controlelement is located between the first coil and the second coil; whenviewed in the fourth direction, the control element is located betweenthe first permeability element and the second permeability element; whenviewed in the fourth direction, the first permeability element overlapsat least a part of the control element; when viewed in the fourthdirection, the second permeability element overlaps at least a part ofthe control element; when viewed in the fourth direction, the controlelement overlaps at least a part of the positioning assembly; theoptical element driving mechanism further includes a circuit assemblyelectrically connected to the first sensing element; the circuitassembly has a plate-shaped structure; the first sensing element iselectrically connected to the control element via the circuit assembly;the control element is electrically connected to the first drivingassembly via the circuit assembly.
 18. The optical element drivingmechanism as claimed in claim 17, wherein the fixed assembly includes: abottom plate, having a plate-shaped structure; and a base; the base isfixedly disposed on the bottom plate; the bottom plate includes a metal;the base includes a plastic material; at least a part of the firstdriving assembly is fixedly disposed on the base; the fixed member isfixedly disposed on the base; a permeability of the bottom plate is lessthan a permeability of the first permeability element; the base and thepositioning assembly are integrally formed in one piece; a notch isformed on the base and is configured to accommodate the control element;when viewed in the fourth direction, the base does not overlap the firstsensing element; when viewed in the fourth direction, the base overlapsat least a part of the control element; the circuit assembly is disposedbetween the base and the bottom plate.
 19. The optical element drivingmechanism as claimed in claim 18, wherein the fixed assembly furtherincludes: an outer frame, having a top surface and a side surface,having a plate-shaped structure, and the top surface is not parallel tothe side surface; and a frame, fixedly disposed on the bottom plate; theouter frame has a metal material; the frame has a plastic material; theoptical element driving mechanism further includes a third opticalelement, fixedly connected to the base; the third optical element has alens to diffuse or converge a light beam; the base has a convexstructure, corresponding to the third optical element; the third opticalelement is fixedly connected to the frame; the frame has a convexstructure, corresponding to the third optical element; the light beam isincident on a photosensitive assembly through the first optical element,the second optical element, and the third optical element, and thephotosensitive assembly includes a photosensitive element.
 20. Theoptical element driving mechanism as claimed in claim 19, wherein theoptical element driving mechanism is configured to correspond to and beadjacent to an optical system; when viewed in the fourth direction, theoptical element driving mechanism has a polygonal structure; when viewedin the fourth direction, the light beam enters from a first side of theoptical element driving mechanism and exits from a second side, and thefirst side and the second side are parallel to each other; when viewedin the fourth direction, the first driving assembly is located at athird side of the optical element driving mechanism; when viewed in thefourth direction, the second driving assembly is located at the thirdside; when viewed in the fourth direction, the first sensing element islocated at the third side; when viewed in the fourth direction, thesecond sensing element is located at the third side; when viewed in thefourth direction, a distance between an optical axis of the firstoptical element and a boundary of the third side is greater than adistance between the optical axis and a boundary of the fourth side ofthe optical element driving mechanism; the third side is parallel to theoptical axis; the third side and the fourth side are parallel to eachother; when viewed in the fourth direction, there is no electromagneticdriving assembly disposed on the fourth side; when viewed in the fourthdirection, the optical system is located at the fourth side.